Unity-MCP
AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free.
Unity-MCP is an MCP server that connects Unity Engine to AI agents like Claude Code, Cursor, and GitHub Copilot, enabling AI-driven game development workflows. It exposes over 70 built-in tools across assets, scenes, scripting, and profiling, allowing developers to automate Unity tasks through natural language. The server supports both Editor and Runtime integration, meaning AI can operate during development and inside compiled games. It uses reflection-powered features to provide deep access to Unity's API and project data, with efficient token usage and extensible custom tool support.
Key Features
Use Cases
- 01Automate repetitive Unity tasks like creating GameObjects, materials, and prefabs through natural language
- 02AI-assisted debugging by letting agents inspect scene hierarchy, logs, and component data
- 03Generate and test game mechanics with AI writing, compiling, and executing C# code dynamically
- 04Build AI-powered NPCs in runtime by exposing custom game logic tools to LLMs inside compiled games
- 05Batch process assets and configure scenes using AI to handle tedious setup work
- 06Team workflows where AI assists with Unity package management, testing, and profiling tasks
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Unity-MCP — FAQ
What is Unity-MCP?+
Unity-MCP is an MCP server that connects Unity Engine to AI agents like Claude Code and Cursor, exposing 70+ tools for automating Unity Editor tasks and enabling AI features inside games at runtime.
How do I install Unity-MCP in my Unity project?+
Download the installer .unitypackage from GitHub releases and import it into Unity, or use the CLI with 'npm install -g unity-mcp-cli' then 'unity-mcp-cli install-plugin ./MyUnityProject'. Then configure your AI client through the Window/AI Game Developer menu or using the CLI 'unity-mcp-cli setup-skills' command.
Which AI clients work with Unity-MCP?+
Unity-MCP works with Claude Code, Claude Desktop, Cursor, Windsurf, GitHub Copilot, Gemini, Cline, and any other MCP-compatible client supporting dynamic skill updates.
Do I need API keys or a Unity license?+
You need an existing Unity Editor installation but the MCP server itself is free. OAuth login to ai-game.dev is optional for cloud features and team collaboration. Your AI client requires its own API keys or subscription (Claude, Copilot, etc.).
Is Unity-MCP free to use?+
Yes, Unity-MCP is open source and free. The plugin and server are provided at no cost; you only need licenses for Unity and your chosen AI client.
Can Unity-MCP be used in runtime/compiled games?+
Yes, Unity-MCP supports runtime usage inside compiled games, allowing you to expose custom tools for AI-driven NPCs, dynamic content generation, or in-game debugging.
How do I install Unity-MCP?+
Open the source repository on GitHub and follow its README. Unity-MCP is a mcp server — MCP Agents Market links you directly to the official repo.
Is Unity-MCP free?+
Unity-MCP is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.