mcp-congress_gov_server

Overview

The Congress.gov API MCP Server is a TypeScript-based implementation that bridges MCP clients with the official Congress.gov API. It uses a hybrid approach with MCP Resources for direct lookups of legislative entities and MCP Tools for complex operations. The server includes rate limiting, comprehensive error handling, and clear documentation on the two-step workflow required for many operations. The implementation follows standard MCP patterns and provides both resource access and tool functionality for bills, members, committees, and other legislative data.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• congress_search

  Search across collections to find legislative entities like bills, members, or committees.

  Try:Search for bills containing 'climate'Try:Find members named 'John Kennedy'Try:List recent legislation
• congress_getSubResource

  Retrieve related data using a parent URI to get detailed information about legislative entities.

  Try:Get actions for bill H.R. 3076Try:Show legislation sponsored by member P000197Try:Get committee assignments for a member

Comparable tools

Installation

npm install

CONGRESS_GOV_API_KEY=YOUR_API_KEY_HERE

npm run build

npm start

{
  "mcpServers": {
    "congress-gov": {
      "command": "node",
      "args": ["dist/server.js"]
    }
  }
}

FAQ

How do I get my Congress.gov API key?

Sign up at https://api.data.gov/signup/ to obtain your free API key for accessing the Congress.gov API.

Why do I need to use both search and subresource tools?

Many operations require a two-step process: first find the entity ID using congress_search, then use that ID with congress_getSubResource to get related details. This is necessary due to API limitations and data structure.

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