Federal Register

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Federal Register MCP — US Federal Register API (free, no auth)

3 tools
0ms auth
free tier 50 calls/day

Tools

search_documents

Search the US Federal Register for proposed rules, final rules, notices, and presidential documents. Returns title, abstract, agency, publication date, and links. Example: search_documents("artificial

No parameters required.

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get_document

Get full details for a Federal Register document by its document number (e.g., "2024-12345"). Returns title, abstract, full text link, agencies, dates, and docket information.

No parameters required.

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recent_rules

Get recently published final rules and regulations from the Federal Register. Returns title, abstract, agency, effective dates, and significance. Useful for tracking new regulations.

No parameters required.

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Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash 
curl -X POST https://gateway.pipeworx.io/federal-register/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash 
curl -X POST https://gateway.pipeworx.io/federal-register/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"search_documents","arguments":{}}}'