Unity MCP Pro Plugin
147 AI tools for Unity game development via MCP (Model Context Protocol). Connect Claude, Cursor, and AI assistants to your Unity editor.
What is Unity MCP Pro Plugin?
Unity MCP Pro Plugin is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to 147 ai tools for unity game development via mcp (model context protocol). connect claude, cursor, and ai assistants to your unity editor.
147 AI tools for Unity game development via MCP (Model Context Protocol). Connect Claude, Cursor, and AI assistants to your Unity editor.
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- 147 AI tools for Unity game development via MCP (Model Conte
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx unity-mcp-pro-pluginConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Unity MCP Pro Plugin
Unity MCP Pro Plugin is a Unity Editor plugin that bridges AI assistants such as Claude and Cursor to the Unity Editor via WebSocket, exposing over 280 tools across 50 categories. It enables AI to manage scenes, GameObjects, scripts, prefabs, materials, physics, lighting, animations, audio, build pipelines, input simulation, testing, XR, ECS/DOTS, and much more — all with full Undo/Redo support through Unity's native undo system. The plugin connects to a companion Node.js MCP server, which speaks the Model Context Protocol to any compatible AI client.
Prerequisites
- Unity 2021.3 LTS or later (supports 2022, 2023, and Unity 6 with Built-in, URP, and HDRP)
- Node.js 18 or higher (for the companion MCP server)
- An MCP-compatible AI client such as Claude Desktop, Cursor, Windsurf, or VS Code Copilot
- Git installed (for Package Manager git URL install)
Install the Unity plugin via Package Manager
In the Unity Editor, open Window → Package Manager, click the + button, choose 'Add package from git URL', and paste the repository URL.
https://github.com/youichi-uda/unity-mcp-pro-plugin.gitDownload and build the MCP server
The plugin is the Unity-side component only. You also need the companion Node.js MCP server, available from unity-mcp.abyo.net. Clone or download it, then build it with npm.
cd server
npm install
npm run buildConfigure your AI client
Add the built server to your MCP client configuration. The command points to the compiled Node.js entry point. You can also use the built-in setup window at Window → Unity MCP Pro → Server Setup.
{
"mcpServers": {
"unity-mcp-pro": {
"command": "node",
"args": ["/path/to/server/build/index.js"]
}
}
}Open Unity and verify the connection
Start your AI client after updating the config, then open Unity. The plugin auto-connects when the editor starts. Check the connection status at Window → Unity MCP Pro.
(Optional) Target a specific Unity instance
If you run multiple Unity editors simultaneously, set the UNITY_MCP_PORT environment variable to target the desired instance. The plugin scans ports 6605 through 6609.
export UNITY_MCP_PORT=6606Unity MCP Pro Plugin Examples
Client configuration
Add this to your claude_desktop_config.json, replacing the path with the actual location of your built server
{
"mcpServers": {
"unity-mcp-pro": {
"command": "node",
"args": ["/Users/yourname/unity-mcp-server/build/index.js"]
}
}
}Prompts to try
Example prompts covering different tool categories the plugin exposes
- "Create a new GameObject named 'Player' with a Rigidbody and CapsuleCollider component"
- "Take a screenshot of the current Scene view and show it to me"
- "Set the directional light intensity to 1.5 and change its color to warm white"
- "Run all EditMode tests and show me the results"
- "Create a new C# script called PlayerController and attach it to the Player object"
- "Build the project for Windows 64-bit and report the build size"Troubleshooting Unity MCP Pro Plugin
The plugin shows 'Disconnected' in Window → Unity MCP Pro even after starting the server
Ensure the Node.js MCP server is running (the MCP client must be started first so it launches the server process). Check that no firewall is blocking localhost ports 6605-6609. The plugin auto-reconnects with exponential backoff, so wait a few seconds after the server starts.
AI operations are not undoable or break after script recompilation
All operations go through Unity's Undo system by design. If undo is not working, check that the plugin version matches the server version. The plugin is domain-reload safe, but if issues persist after recompilation, reconnect from Window → Unity MCP Pro.
'npm run build' fails when setting up the MCP server
Make sure you are using Node.js 18 or higher. Run 'node --version' to check. Also ensure you ran 'npm install' before 'npm run build' so all TypeScript dependencies are present.
Frequently Asked Questions about Unity MCP Pro Plugin
What is Unity MCP Pro Plugin?
Unity MCP Pro Plugin is a Model Context Protocol (MCP) server that 147 ai tools for unity game development via mcp (model context protocol). connect claude, cursor, and ai assistants to your unity editor. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Unity MCP Pro Plugin?
Follow the installation instructions on the Unity MCP Pro Plugin GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Unity MCP Pro Plugin?
Unity MCP Pro Plugin works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Unity MCP Pro Plugin free to use?
Yes, Unity MCP Pro Plugin is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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Set Up Unity MCP Pro Plugin in Your Editor
Choose your AI client for step-by-step setup instructions.
Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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