ratebook for Claude Desktop

io.github.cbetz/ratebook

Open MCP server for US electricity tariffs: real rate lookup, bill estimates, and when to charge.

client:Claude Desktop transport:stdio runtime:pypi

Install ratebook in Claude Desktop

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

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

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