mcp-unity

MCP Unity connects AI assistants to the Unity Editor through the Model Context Protocol. The README lists tools for manipulating and querying scenes and GameObjects: `execute_menu_item` to run any Unity menu item, `select_gameobject`, `update_gameobject` (name, tag, layer, active and static state, or create it if missing), `update_component` (change component fields or add the component), `add_package` to install packages through the Package Manager, and more, each with an example prompt such as adding a Rigidbody to the Player and setting its mass to 5. It also adds the Unity `Library/PackedCache` folder to VS Code-style IDE workspaces (VS Code, Cursor, Windsurf, Antigravity) so assistants understand package dependencies.

Installation has three steps. Install Node.js 18 or newer, then add the package in Unity's Package Manager with "Add package from git URL" and `https://github.com/CoderGamester/mcp-unity.git`, then configure your AI client either from the Unity menu (Tools > MCP Unity > Server Window > Configure) or by hand with a `node` command pointing at `Server~/build/index.js`; a Codex CLI TOML example is included. Finally you start the WebSocket server from the same window. Requirements are Unity 6 or later and Node.js 18 or later, and the README notes that paths with spaces are supported but moving the project is a fix if you see connection problems. It is MIT licensed, with English, Chinese and Japanese READMEs.