MCP tool

get_campaign_dead_letters

List delivery-report pulls for one campaign that reached the retry ceiling and are now parked, including the affected line, adapter, attempt count, last error and observation times. This is read-only: it does not requeue a report, change delivery or release held funds. Hand the exact record and corrective evidence to a permitted human in Operator, then poll this tool until the record clears and verify fresh authoritative delivery. MCP identities cannot perform the requeue.

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",
      "description": "campaign id with parked reporting"
    }
  },
  "required": [
    "campaignId"
  ]
}

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": "GET",
  "path": "/api/v1/campaigns/{campaignId}/dead-letters",
  "pathFields": [
    "campaignId"
  ],
  "pathSchema": {
    "type": "object",
    "properties": {
      "campaignId": {
        "type": "string",
        "description": "campaign id with parked reporting"
      }
    },
    "additionalProperties": false,
    "required": [
      "campaignId"
    ]
  },
  "pathEncoding": "encodeURIComponent for each path field",
  "governedAction": null,
  "headers": {},
  "querySchema": {
    "type": "object",
    "properties": {},
    "additionalProperties": false
  },
  "queryEncoding": "URLSearchParams; omit undefined fields, stringify supplied values",
  "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": {
    "deadLetters": {
      "type": "array",
      "items": {}
    },
    "policy": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    }
  },
  "required": [
    "deadLetters",
    "policy"
  ],
  "additionalProperties": {}
}

Safety annotations

MCP annotations

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

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