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CongressMCP

by amurshak
npmGitHub
JavaScript
MIT License
49
  • Apple
  • Linux
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congressmcp

Connect Claude Desktop to US Congressional data - bills, amendments, members, committees, and more.

Installation

npm install -g congressmcp

Setup

  1. Get your API key:
  2. Configure local MCP client:

Add this to your config or cline_mcp_settings.json with your API key:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json
Linux: ~/.config/Claude/claude_desktop_config.json

{ "mcpServers": { "congressmcp": { "command": "npx", "args": [ "-y", "congressmcp" ], "env": { "CONGRESSMCP_API_KEY": "your-api-key-here" } } } }
  1. Restart Claude Desktop to activate the connection.

Usage

Ask Claude about:

  • Bills: "Search for recent climate bills"
  • Members: "Who represents California in the Senate?"
  • Committees: "What committees handle healthcare?"
  • Amendments: "Show amendments to HR 1234"
  • Roll Call Votes: "How did senators vote on the infrastructure bill?"
  • And much more legislative data!

Known Limitations

⚠️ Important Architectural Notice:

Currently, all users share a single Congress.gov API key on the backend server. This means:

  • Rate Limits: All users share the same 5,000 requests/hour quota from Congress.gov
  • Scalability: May hit rate limits with many concurrent users
  • Architecture: Not the ideal long-term solution

Planned Fix (v2.0): Future versions will require users to provide their own Congress.gov API key for individual rate limits and better scalability. This will require:

  1. Obtaining a free Congress.gov API key at: https://api.congress.gov/sign-up/
  2. Adding CONGRESS_GOV_API_KEY to your Claude config

Current Status: This limitation doesn't affect functionality for early users, but please be aware that heavy usage may experience rate limiting.

Subscription Tiers

  • FREE: All functions with 200 calls/month
  • PRO: $19/month, all functions with 5,000 calls/month
  • ENTERPRISE: Custom pricing, unlimited usage

Support

support@congressmcp.lawgiver.ai

This server cannot be installed

-
security - not tested
A
license - permissive license
-
quality - not tested

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

An MCP server for the Congress.gov API that consolidates 91 operations into 6 comprehensive legislative tools that can be used by any MCP client (i.e. Claude Desktop), or MCP-compatible AI agent, to query and reason about congressional data.

  1. Installation
    1. Setup
  2. Usage
    1. Known Limitations
      1. Subscription Tiers
        1. Support

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