`list_granules`

Pack: govinfo · Endpoint: https://gateway.pipeworx.io/govinfo/mcp

List granules within a package — e.g., sections of a CFR title, individual entries in a Federal Register issue. Returns granule IDs + titles.

Parameters

Name	Type	Required	Description
`package_id`	string	yes	GovInfo packageId
`page_size`	number	no	1-100 (default 100)
`offset_mark`	string	no	Pagination cursor

Example call

Arguments

{
  "package_id": "BILLS-118hr1234ih"
}

curl

curl -X POST https://gateway.pipeworx.io/govinfo/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"list_granules","arguments":{"package_id":"BILLS-118hr1234ih"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('list_granules', {
  "package_id": "BILLS-118hr1234ih"
});

More examples

{
  "package_id": "CFR-2024-title29-vol5",
  "page_size": 50
}

Response shape

Always returns: package_id, total, returned, granules

Field	Type	Description
`package_id`	string	GovInfo package ID
`total`	number	Total granules in package
`next_offset_mark`	string \| null	Pagination cursor for next results
`returned`	number	Number of granules returned
`granules`	array	List of granules in package

Full JSON Schema

{
  "type": "object",
  "properties": {
    "package_id": {
      "type": "string",
      "description": "GovInfo package ID"
    },
    "total": {
      "type": "number",
      "description": "Total granules in package"
    },
    "next_offset_mark": {
      "type": [
        "string",
        "null"
      ],
      "description": "Pagination cursor for next results"
    },
    "returned": {
      "type": "number",
      "description": "Number of granules returned"
    },
    "granules": {
      "type": "array",
      "description": "List of granules in package",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": [
              "string",
              "null"
            ],
            "description": "Granule ID"
          },
          "title": {
            "type": [
              "string",
              "null"
            ],
            "description": "Granule title"
          },
          "class": {
            "type": [
              "string",
              "null"
            ],
            "description": "Granule class/type"
          },
          "link": {
            "type": [
              "string",
              "null"
            ],
            "description": "URL to granule on GovInfo"
          }
        }
      }
    }
  },
  "required": [
    "package_id",
    "total",
    "returned",
    "granules"
  ]
}

Connect

Add this to your MCP client config, or use one-click install buttons:

{
  "mcpServers": {
    "govinfo": {
      "url": "https://gateway.pipeworx.io/govinfo/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

list_granules