This MCP server acts as a bridge between MCP-compatible clients and ESP RainMaker devices. It wraps the official esp-rainmaker-cli Python library, enabling MCP clients (such as LLMs and applications like Cursor, Claude Desktop, Windsurf, and Gemini CLI) to interact with ESP RainMaker devices using the CLI. The server runs locally, storing credentials on your machine, while device management calls are executed against the ESP RainMaker cloud via the CLI. Prerequisites include Python 3.10+, the uv package manager, a successful esp-rainmaker-cli login, and RainMaker Nodes added to your account. The server exposes a set of capabilities via MCP, including authentication/configuration utilities (login_instructions, check_login_status), node management (get_nodes, get_node_details, get_node_status, get_params, set_params), schedule management (get_schedules, set_schedule), and group management (create_group, get_group_details, update_group, add_device_to_room). Under the hood, on each call it uses the MCP library to dispatch to esp-rainmaker-cli functions, which read locally stored tokens and call the ESP RainMaker cloud, returning results or errors through MCP. This design enables local credential storage with cloud-backed device management.