CongressMCP

91+ congressional data tools for Claude, Cursor, VS Code, and any MCP client.

Access live U.S. Congressional data — bills, votes, members, committees, hearings, and more — through natural language via the Model Context Protocol.

Tools

7 toolsets, 90+ operations covering the Congress.gov API:

search_committees and search_summaries take an optional keywords argument — omit it to browse/list (committees can also be filtered by chamber/committee_type).

Quick Start

1. Get a free Congress.gov API key

Sign up at api.congress.gov/sign-up (takes 30 seconds, completely free).

2. Configure your MCP client

Claude Desktop — add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "congressmcp": {
      "command": "uvx",
      "args": ["congressmcp"],
      "env": {
        "CONGRESS_API_KEY": "your-api-key-here"
      }
    }
  }
}

VS Code — add to .vscode/mcp.json:

{
  "servers": {
    "congressmcp": {
      "command": "uvx",
      "args": ["congressmcp"],
      "env": {
        "CONGRESS_API_KEY": "your-api-key-here"
      }
    }
  }
}

Cursor — add to ~/.cursor/mcp.json using the same format as VS Code.

3. Start asking questions

"Find recent climate change bills in the 119th Congress" "How did senators from California vote on the latest defense bill?" "Who are the members of the Senate Judiciary Committee?" "What's the latest action on H.R. 1234?"

Running from source

git clone https://github.com/amurshak/congressMCP
cd congressMCP
pip install -e .

# stdio (default — for MCP clients)
CONGRESS_API_KEY=your-key congressmcp

# HTTP (for self-hosting / remote access)
congressmcp --transport streamable-http --port 8000

Configuration

License

Sustainable Use License

Built for government transparency and accessible civic data.