{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "/schemas/3.0.18/content-standards/calibrate-content-request.json",
  "title": "Calibrate Content Request",
  "description": "Request parameters for evaluating content during calibration. Multi-turn dialogue is handled at the protocol layer via contextId.",
  "x-mutates-state": true,
  "type": "object",
  "properties": {
    "adcp_major_version": {
      "type": "integer",
      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
      "minimum": 1,
      "maximum": 99
    },
    "standards_id": {
      "type": "string",
      "description": "Standards configuration to calibrate against"
    },
    "artifact": {
      "$ref": "/schemas/3.0.18/content-standards/artifact.json",
      "description": "Artifact to evaluate"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
      "minLength": 16,
      "maxLength": 255,
      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
    },
    "context": {
      "$ref": "/schemas/3.0.18/core/context.json"
    },
    "ext": {
      "$ref": "/schemas/3.0.18/core/ext.json"
    }
  },
  "required": [
    "idempotency_key",
    "standards_id",
    "artifact"
  ]
}