Yeelight MCP Server is an intelligent lighting control service built on the Model Context Protocol (MCP). It provides a unified interface for AI assistants, intelligent agents, and other MCP-compatible clients to seamlessly control Yeelight Pro series devices and query their status. The server exposes a Streamable HTTP API with clearly defined interfaces and standardized response formats, enabling easy integration with LLM workflows and agent frameworks such as Claude Desktop, Cursor, and LangChain. It supports core operations including turning devices on/off, adjusting brightness, color and color temperature, curtain control, and multi-channel control, as well as triggering preset scenes for lighting linking and ambiance creation. The design emphasizes privacy and flexibility: you can deploy the open-source code locally on an intranet without cloud dependence, or connect to Yeelight's official cloud service for remote access, discovery, and cross-network operation. Quick start covers two access methods: official remote MCP server or local deployment. Client configuration examples show how to pass Authorization, Client-Id, and House-Id headers. This makes it easy to integrate with popular MCP clients like Cursor, Claude Desktop, and Cherry Studio.