US Code of Federal Regulations for Claude Desktop

io.github.mccallar/cfr-mcp

Look up, search, and track changes to the US Code of Federal Regulations (eCFR).

client:Claude Desktop transport:stdio runtime:pypi

Install US Code of Federal Regulations in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "cfr-mcp": {
      "command": "uvx",
      "args": [
        "cfr-mcp"
      ]
    }
  }
}

Settings → Developer → Edit Config opens this file. Restart the app after saving. Claude Desktop docs