{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://adcontextprotocol.org/schemas/3.2.0-beta.0/creative/validate-input-request.json",
  "title": "Validate Input Request",
  "description": "Request payload for the validate_input task. Lets buyers preflight a creative manifest against canonical formats and/or specific products before committing to a render or other expensive creative-production step. It validates manifest structure and target format constraints only: slot counts, asset types, parameter ranges, and format-shape constraints. It does not rehearse a seller's library mutation, creative_id upsert semantics, package assignments, account authorization, active-delivery protections, or other trafficking-time gates. When the question is final seller acceptance for a creative that is ready to traffic, call sync_creatives directly; use dry_run: true for a non-mutating rehearsal of that operation. Used by build_creative internally to validate inputs before producing output. For genuinely nondeterministic generative systems where predictive validation is impossible, the platform's own post-synthesis QA loop applies — validate_input is the predictable-case primitive.\n\nThe `targets[]` array is a discriminated list of validation targets, mirroring the response shape on `validate-input-result.json#target`. Each entry has a `kind` (canonical | product | third_party_format | capability) plus a kind-specific identifier. The capability kind is the canonical agent-local route for an advertised supported_formats entry whose operations contains validate; the other target kinds remain portable contract identifiers. Discriminated-by-kind on both sides eliminates a wire-shape mismatch: a previous draft used `format_ids: string[]` for canonical names alongside `product_ids: string[]`, which collided with `Product.format_ids: FormatId[]` ({agent_url, id}) — codegen would emit the same field name with two different types. Discriminated `targets[]` makes the intent explicit and codegen-clean.",
  "x-tool-summary": "Preflight a creative manifest against canonical formats, products, third-party formats, or agent capabilities.",
  "type": "object",
  "required": [
    "manifest"
  ],
  "properties": {
    "account": {
      "$ref": "https://adcontextprotocol.org/schemas/3.2.0-beta.0/core/account-ref.json",
      "description": "Optional account scope for seller-specific product validation. Required by sellers that route product declarations by buyer account."
    },
    "brand": {
      "$ref": "https://adcontextprotocol.org/schemas/3.2.0-beta.0/core/brand-ref.json",
      "description": "Optional brand scope when account is omitted or the seller keys sandbox validation by brand identity."
    },
    "manifest": {
      "$ref": "https://adcontextprotocol.org/schemas/3.2.0-beta.0/core/creative-manifest.json",
      "description": "Creative manifest to validate."
    },
    "targets": {
      "type": "array",
      "minItems": 1,
      "maxItems": 50,
      "description": "Discriminated list of validation targets. Each entry mirrors the `target` shape on `validate-input-result.json` so the request/response wire shapes match exactly. Multi-target requests enable universal-creative scenarios where one manifest targets multiple sellers' format declarations in a single round-trip; the response carries one result per target in the same order.",
      "items": {
        "type": "object",
        "required": [
          "kind",
          "id"
        ],
        "discriminator": {
          "propertyName": "kind"
        },
        "oneOf": [
          {
            "title": "Canonical Format Target",
            "properties": {
              "kind": {
                "type": "string",
                "const": "canonical"
              },
              "id": {
                "type": "string",
                "description": "Canonical format name from `canonical-format-kind.json` (e.g., `image`, `video_hosted`, `audio_daast`). Validators check the manifest against the canonical's parameter schema."
              }
            },
            "required": [
              "kind",
              "id"
            ]
          },
          {
            "title": "Product Target",
            "properties": {
              "kind": {
                "type": "string",
                "const": "product"
              },
              "id": {
                "type": "string",
                "description": "Product ID. Validators check the manifest against the product's inline `ProductFormatDeclaration` narrowing of the canonical (parameter constraints, slot requirements, platform extensions)."
              }
            },
            "required": [
              "kind",
              "id"
            ]
          },
          {
            "title": "Third-Party Format Target",
            "properties": {
              "kind": {
                "type": "string",
                "const": "third_party_format"
              },
              "id": {
                "type": "string",
                "format": "uri",
                "description": "URI-form format identifier referencing a third-party format definition (e.g., `https://creativevendor.example/formats/image_300x250@sha256:...`). Validators fetch the definition (digest-pinned, cached) and validate the manifest against it."
              }
            },
            "required": [
              "kind",
              "id"
            ]
          },
          {
            "title": "Creative Capability Target",
            "properties": {
              "kind": {
                "type": "string",
                "const": "capability"
              },
              "id": {
                "type": "string",
                "pattern": "^[a-zA-Z0-9_-]+$",
                "description": "Agent-local capability_id from get_adcp_capabilities creative.supported_formats. The selected entry MUST include validate in operations; unknown IDs or entries without validate are rejected with FORMAT_NOT_SUPPORTED."
              }
            },
            "required": [
              "kind",
              "id"
            ]
          }
        ]
      }
    }
  },
  "additionalProperties": true,
  "examples": [
    {
      "description": "Preflight a video manifest against canonical video_hosted and a fictional publisher product in one round-trip",
      "data": {
        "manifest": {
          "format_kind": "video_hosted",
          "assets": {
            "video_main": {
              "asset_type": "video",
              "url": "https://cdn.acme.example/spring-30s.mp4",
              "duration_ms": 30000,
              "width": 1080,
              "height": 1920
            }
          },
          "brand": {
            "domain": "acme.example"
          }
        },
        "targets": [
          {
            "kind": "canonical",
            "id": "video_hosted"
          },
          {
            "kind": "product",
            "id": "streamhaus_vertical_video_us"
          }
        ]
      }
    }
  ]
}