CoplayDev/unity-mcp

Create your Unity apps with LLMs. MCP for Unity bridges AI assistants — Claude, Codex, VS Code, local LLMs, and more — with your Unity Editor via Model Context Protocol. Give your LLM the tools to manage assets, control scenes, edit scripts, run tests, and automate your game dev workflows.

Control the Unity Editor in natural language from any MCP client — create scenes & GameObjects, edit C# scripts, manage assets, run tests, profile, and build. 50 focused MCP tool entrypoints, any client, free & MIT.

Browse the full tool catalog →

Requirements: Unity 2021.3 LTS → 6.x · Python 3.10+ (via uv). Works with any MCP client — Claude Desktop & Code, Cursor, VS Code, Windsurf, Cline, Gemini CLI, and more.

1. Install — Unity → Package Manager → Add from git URL: https://github.com/CoplayDev/unity-mcp.git?path=/MCPForUnity#main  (pin #v10.0.0 for this release, or openupm add com.coplaydev.unity-mcp)
2. Configure — Window → MCP for Unity → Configure All Detected Clients.
3. Prompt — "Create a cube at the origin and add a Rigidbody." The cube appears in seconds.

• Discord — chat with maintainers and other contributors
• Issues — bugs and feature requests
• Discussions — design ideas and broader questions
• Security: see SECURITY.md for private reporting

See CONTRIBUTING.md. Branch off beta, not main. The full dev setup, testing, and release process live in the Contributing docs.

• Multiple Unity instances — Multi-Instance Routing
• Tool groups (vfx / animation / ui / testing / etc.) — Tool Groups
• v10 asset generation and upgrade notes — v10 Migration
• Roslyn script validation — Roslyn Validation
• Remote-hosted server with auth — Remote Server Auth

If MCP for Unity helped your research, please cite it.

@inproceedings{wu2025mcpunity,
  author    = {Wu, Shutong and Barnett, Justin P.},
  title     = {{MCP-Unity}: {Protocol-Driven} Framework for Interactive {3D} Authoring},
  year      = {2025},
  isbn      = {9798400721366},
  publisher = {Association for Computing Machinery},
  address   = {New York, NY, USA},
  url       = {https://doi.org/10.1145/3757376.3771417},
  doi       = {10.1145/3757376.3771417},
  series    = {SA Technical Communications '25}
}

Aura offers 2 AI tools for Unity:

• MCP for Unity is available freely under the MIT license.
• Aura for Unity is a premium Unity/Unreal AI assistant built for game devs.

This project is a free and open-source tool for the Unity Editor, and is not affiliated with Unity Technologies.

License: MIT — see LICENSE.