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MCP tool

request_booking_amendment

Record a local request to reduce an existing confirmed supplier budget cap, shorten its flight or retain a subset of already quoted inventory. No supplier write, payment or release occurs. Reuse the idempotency key after timeout. Staff must quote it, the buyer must approve the exact digest in the web UI, and staff must verify the supplier outcome. Expanded budgets, flights, inventory and replacement creative need a new booking.

Input

Pass fields from this schema as the tool arguments. Runtime ownership, product scope and readiness checks still apply.

Input JSON Schema
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "campaignId": {
      "type": "string",
      "minLength": 1
    },
    "bookingLineId": {
      "type": "string",
      "minLength": 1
    },
    "expectedLineVersion": {
      "type": "integer",
      "minimum": 0,
      "maximum": 9007199254740991
    },
    "idempotencyKey": {
      "type": "string",
      "minLength": 8,
      "maxLength": 128
    },
    "changes": {
      "type": "object",
      "properties": {
        "budgetCapMinor": {
          "type": "integer",
          "minimum": 1,
          "maximum": 2147483647
        },
        "endDate": {
          "type": "string",
          "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
        },
        "inventoryIds": {
          "minItems": 1,
          "maxItems": 500,
          "type": "array",
          "items": {
            "type": "string",
            "minLength": 1,
            "maxLength": 500
          }
        },
        "note": {
          "type": "string",
          "minLength": 10,
          "maxLength": 20000
        }
      },
      "required": [
        "note"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "campaignId",
    "bookingLineId",
    "expectedLineVersion",
    "idempotencyKey",
    "changes"
  ],
  "additionalProperties": false
}

REST mapping and authority

The tool wraps this REST endpoint. The mapping identifies path/query/body transformations and approval or idempotency headers.

Request contract
{
  "method": "POST",
  "path": "/api/v1/campaigns/{campaignId}/booking-amendments",
  "pathFields": [
    "campaignId"
  ],
  "pathSchema": {
    "type": "object",
    "properties": {
      "campaignId": {
        "type": "string",
        "minLength": 1
      }
    },
    "additionalProperties": false,
    "required": [
      "campaignId"
    ]
  },
  "pathEncoding": "encodeURIComponent for each path field",
  "governedAction": null,
  "headers": {},
  "bodySchema": {
    "type": "object",
    "properties": {
      "bookingLineId": {
        "type": "string",
        "minLength": 1
      },
      "expectedLineVersion": {
        "type": "integer",
        "minimum": 0,
        "maximum": 9007199254740991
      },
      "idempotencyKey": {
        "type": "string",
        "minLength": 8,
        "maxLength": 128
      },
      "changes": {
        "type": "object",
        "properties": {
          "budgetCapMinor": {
            "type": "integer",
            "minimum": 1,
            "maximum": 2147483647
          },
          "endDate": {
            "type": "string",
            "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
          },
          "inventoryIds": {
            "minItems": 1,
            "maxItems": 500,
            "type": "array",
            "items": {
              "type": "string",
              "minLength": 1,
              "maxLength": 500
            }
          },
          "note": {
            "type": "string",
            "minLength": 10,
            "maxLength": 20000
          }
        },
        "required": [
          "note"
        ],
        "additionalProperties": false
      }
    },
    "additionalProperties": false,
    "required": [
      "bookingLineId",
      "expectedLineVersion",
      "idempotencyKey",
      "changes"
    ]
  },
  "responseMapping": "REST JSON is returned as MCP structuredContent and a compatibility text block; privacy-sensitive tools validate their output schema."
}

Output

This is the registered MCP output envelope. Nested fields are only modeled where the schema explicitly defines them.

Output JSON Schema
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "amendment": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    },
    "replayed": {
      "type": "boolean"
    }
  },
  "required": [
    "amendment",
    "replayed"
  ],
  "additionalProperties": {}
}

Safety annotations

MCP annotations
{
  "readOnlyHint": false,
  "destructiveHint": false,
  "idempotentHint": true,
  "openWorldHint": false
}

Annotations help a client present the tool. The API independently enforces authorization and exact action approvals. Error and retry guidance →

request_booking_amendment | AdBuyMCP docs