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Claude Desktop congressgov mcp server congressgov_committee_lookup

How to: Claude Desktop congressgov mcp server congressgov_committee_lookup

client:Claude Desktop transport:streamable-http tool:congressgov_committee_lookup

Add congressgov mcp server to Claude Desktop

  1. 01

    Open ~/Library/Application Support/Claude/claude_desktop_config.json and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "congressgov-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://congressgov.caseyjhand.com/mcp"
      ]
    }
  }
}
  1. 02

    Save the file and restart Claude Desktop.

  2. 03

    Ask for something congressgov_committee_lookup does. Claude Desktop lists the server's tools on connect and calls congressgov_committee_lookup itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that congressgov mcp server's identifier in your config matches the one above exactly.

Claude Desktop has no remote transport in its config file, so this bridges through mcp-remote. Restart the app after saving. Claude Desktop docs

Set these first

congressgov mcp server will not start until these are set, so congressgov_committee_lookup never becomes available.

  • CONGRESS_API_KEY
  • MCP_LOG_LEVEL

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.