{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "/schemas/3.0.18/protocol/get-adcp-capabilities-request.json",
  "title": "Get AdCP Capabilities Request",
  "description": "Request payload for get_adcp_capabilities task. Protocol-level capability discovery that works across all AdCP protocols.",
  "type": "object",
  "properties": {
    "adcp_major_version": {
      "type": "integer",
      "description": "The AdCP major version the buyer's payloads conform to. When provided, the seller validates this against its supported major_versions and returns VERSION_UNSUPPORTED if the version is not in range. When omitted, the seller assumes the highest major version it supports.",
      "minimum": 1,
      "maximum": 99
    },
    "protocols": {
      "type": "array",
      "description": "Specific protocols to query capabilities for. If omitted, returns capabilities for all supported protocols.",
      "items": {
        "type": "string",
        "enum": ["media_buy", "signals", "governance", "sponsored_intelligence", "creative"]
      },
      "minItems": 1
    },
    "context": {
      "$ref": "/schemas/3.0.18/core/context.json"
    },
    "ext": {
      "$ref": "/schemas/3.0.18/core/ext.json"
    }
  },
  "additionalProperties": true
}