MCP for Unity

What it does

A free, MIT-licensed bridge between AI assistants and the Unity Editor over MCP. From any MCP client you can create scenes and GameObjects, edit C# scripts, manage assets, run tests, profile and build. It is maintained by Aura, which also sells a separate paid assistant (Aura for Unity). Not affiliated with Unity Technologies.

Who it's for

Unity developers (Unity 2021.3 LTS through 6.x) who want Claude, Codex, Cursor or another MCP client to work directly in the editor.

How to set it up

1. Needs Python 3.10+ via uv. In Unity, open Package Manager → Add package from git URL and paste:

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   https://github.com/CoplayDev/unity-mcp.git?path=/MCPForUnity#main

2. Or install from OpenUPM:

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   openupm add com.coplaydev.unity-mcp

3. In Unity, choose Window → MCP for Unity → Configure All Detected Clients.

4. Try the README's first prompt:

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   Create a cube at the origin and add a Rigidbody.

Check the official MCP for Unity docs for the latest steps.

Example prompts

Create a third-person player controller script and attach it to a capsule.

Set up a simple level with a ground plane, three platforms and a spawn point.

Run the edit-mode tests and fix any failures.

Demo