Ever wonder what our (US) Congress is up to? Tired of reading the news to find out? Ask the US Congress API yourself.

Unofficial MCP server for the Congress.gov API

To install congress_gov_mcp for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @AshwinSundar/congress_gov_mcp --client claude

1. Install uv. The easiest way on macOS and Linux is:

   curl -LsSf https://astral.sh/uv/install.sh | sh
   

2. Get a Congress.gov API key.

3. Install Claude Desktop, Claude Code, or another client that supports MCP Integrations

1. Complete Prerequisites

2. Clone this repository, and cd in:

   git clone http://github.com/AshwinSundar/congress_gov_mcp
   

   cd congress_gov_mcp
   

3. Install dependencies:

   uv sync
   

4. Create a .env file from the template:

   cp .env.template .env
   

5. Add your Congress.gov API key to the .env file:

congress_gov_mcp/.env

CONGRESS_GOV_API_KEY="your-api-key-here"

1. Complete Prerequisites

2. Copy the absolute path to your uv installation:

which uv

2. Add the following to your Claude Desktop configuration file, inside the mcpServers block:

   macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

   Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "congress_gov_mcp": {
      "command": "/absolute_path/to/uv",
      "args": [
        "run",
        "/absolute_path_to/congress_gov_mcp/server.py"
      ]
    }
  }
}

1. Complete Prerequisites

2. Add the following to .mcp.json in the directory you are running Claude Code in, inside the mcpServers block:

{
  "mcpServers": {
    "congress_gov_mcp": {
      "command": "uv",
      "args": [
        "run",
        "/absolute_path_to/congress_gov_mcp/server.py"
      ]
    }
  }
}

• api.congress.gov
  • /bill
    • /{congress}
    • /{congress}/{billType}
    • /{congress}/{billType}/{billNumber}
      • /actions
      • /amendments
      • /committees
      • /cosponsors
      • /relatedbills
      • /subjects
      • /summaries
      • /text
      • /titles
  • /amendment
    • /{congress}
    • /{congress}/{amendmentType}
    • /{congress}/{amendmentType}/{amendmentNumber}
      • /actions
      • /cosponsors
      • /amendments
      • /text
  • /summaries
    • /{congress}
    • /{congress}/{billType}
  • /congress
    • /{congress}
    • /current
  • /member
    • /{bioguideId}
      • /sponsored-legislation
      • /cosponsored-legislation
  • /committee
    • /{systemCode}
      • /bills
      • /reports
      • /nominations
      • /meetings
      • /hearings
      • /house-communication
      • /senate-communication
  • /committee-report
    • /{congress}
    • /{congress}/{reportType}
    • /{congress}/{reportType}/{reportNumber}
      • /text
  • /committee-print
    • /{congress}
    • /{congress}/{printType}
    • /{congress}/{printType}/{printNumber}
      • /text
  • /committee-meeting
    • /{congress}
    • /{congress}/{chamber}
      • /meetings
  • /hearing
    • /{congress}
    • /{congress}/{chamber}
    • /{congress}/{chamber}/{hearingNumber}
  • /house-vote
    • /{congress}
    • /{congress}/{session}
    • /{congress}/{session}/{rollCallNumber}
  • /congressional-record
    • /{volume}
    • /{volume}/{pagePrefix}
    • /{volume}/{pagePrefix}/{pageNumber}
  • /daily-congressional-record
    • /{volume}
    • /{volume}/{issue}
  • /bound-congressional-record
    • /{year}
    • /{year}/{month}
    • /{year}/{month}/{day}
  • /house-communication
    • /{congress}
    • /{congress}/{communicationType}
    • /{congress}/{communicationType}/{communicationNumber}
  • /house-requirement
    • /{congress}
    • /{congress}/{requirementNumber}
  • /senate-communication
    • /{congress}
    • /{congress}/{communicationType}
    • /{congress}/{communicationType}/{communicationNumber}
  • /nomination
    • /{congress}
    • /{congress}/{nominationNumber}
      • /actions
      • /hearings
  • /crsreport
    • /{productCode}
  • /treaty
    • /{congress}
    • /{congress}/{treatyNumber}
      • /actions
      • /committees