mcp-registry/Unity-MCP

    ==================
      
       /// MCP ///
      /// UNI ///
        
    ==================
        
    [server:online]
    [protocol:ready]

Unity-MCP

by IvanMurzak

Bridge between Large-Language-Model (LLM) clients (Claude, Cursor, custom) and the Unity Editor. Ships as a Unity-package that spins up an MCP server inside the editor and exposes a catalogue of AI-driven “tools” (GameObject, Scene, Assets, Prefab, etc.) so an external client can query or manipulate the open Unity project.

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Installation

Unity-MCP is delivered as a Unity package (client-side) and a small .NET server.
Prerequisites
1. Unity 2021.3 LTS or newer.
2. .NET 8.0 SDK (for building/running the standalone server).
3. Optional: An OpenAI/Anthropic/Ollama key if you want to forward calls to those back-ends.
A. Install the Unity package
1. Open your Unity project.
2. Window ▶ Package Manager ▶ “+” ▶ Add package from Git URL…
3. Paste
https://github.com/IvanMurzak/Unity-MCP.git?path=Packages/com.ivanmurzak.mcp
4. Click Add. Unity will clone the repo and register the package.
B. Build / run the MCP Server
# clone the repository (or reuse the copy Unity already downloaded) $ git clone https://github.com/IvanMurzak/Unity-MCP.git $ cd Unity-MCP/Server # restore & build $ dotnet restore $ dotnet build -c Release # first-time configuration (copies the example config) $ cp appsettings.sample.json appsettings.json # edit appsettings.json and insert your provider keys # "OpenAI": { "ApiKey": "sk-..." } # run the server $ dotnet UnityMCP.Server.dll # By default the server listens on http://localhost:5037
C. Connect from Unity
1. In Unity ▶ Edit ▶ Project Settings ▶ MCP.
2. Set “Server URL” to http://localhost:5037.
3. Press Play – the editor and in-game scripts can now call MCP methods.
Updating
Run `git pull` inside the cloned repo and restart the server, or in Unity right-click the package ▶ “Resolve”.

Documentation

License: Apache License 2.0
Updated 7/30/2025

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