Unity-MCP

Overview

Unity-MCP is a comprehensive MCP server that bridges Unity game development with AI capabilities. It provides extensive tools for AI agents to manipulate Unity projects, create game objects, modify assets, and even work within compiled games at runtime. The server supports multiple AI providers including Claude, OpenAI, and Microsoft with no vendor lock-in, and features a CLI for quick setup. Its ability to enable AI interaction inside games opens up possibilities for dynamic NPC behavior and real-time debugging.

Try asking AI

After installing, here are 6 things you can ask your AI assistant:

• assets-copy

  Copy the asset at path and stores it at newPath

  Try:Copy the material from Materials folder to ResourcesTry:Duplicate the texture asset at Assets/Textures/wood.png
• gameobject-create

  Create a new GameObject in opened Prefab or in a Scene

  Try:Create a cube GameObject at position (0, 0, 0)Try:Create a new empty GameObject named Player
• scene-open

  Open scene from the project asset file

  Try:Open the MainMenu sceneTry:Load the level named Level_01
• script-update-or-create

  Updates or creates script file with the provided C# code

  Try:Create a new PlayerController script with movement functionalityTry:Update the HealthManager script to include regeneration
• reflection-method-call

  Call any C# method with input parameters and return results

  Try:Call the ApplyDamage method with value 10Try:Execute the ResetGame method
• editor-application-set-state

  Control the Unity Editor application state (start/stop/pause playmode)

  Try:Start the game in play modeTry:Pause the currently running game
• assets-find

  Search the asset database using the search filter string

  Try:Find all materials with 'metallic' in the nameTry:Search for textures named 'grass'
• gameobject-modify

  Modify GameObjects and/or attached component's fields and properties

  Try:Change the cube's position to (0, 5, 0)Try:Set the player's health to 100
• package-add

  Install a package from the Unity Package Manager registry

  Try:Install the Cinemachine packageTry:Add the TextMeshPro package to the project
• tests-run

  Execute Unity tests (EditMode/PlayMode) with filtering and detailed results

  Try:Run all tests in the EditorTests folderTry:Execute all PlayMode tests for the Player component
• screenshot-game-view

  Captures a screenshot from the Unity Editor Game View

  Try:Take a screenshot of the current game viewTry:Capture the gameplay as it looks now
• reflection-method-find

  Find method in the project using C# Reflection (even private methods)

  Try:Find methods with 'Jump' in their nameTry:Locate private methods in the Player class

Comparable tools

Installation

openupm add com.ivanmurzak.unity.mcp

# Install CLI
npm install -g unity-mcp-cli

# Install plugin in Unity project
unity-mcp-cli install-plugin ./MyUnityProject

# Setup AI skills
unity-mcp-cli setup-skills claude-code ./MyUnityProject

{
  "mcpServers": {
    "unity-mcp": {
      "command": "npx",
      "args": ["unity-mcp-server"],
      "env": {}
    }
  }
}

FAQ

Does Unity-MCP work in runtime games?

Yes, unlike many other tools, Unity-MCP works inside your compiled game, allowing for real-time AI debugging and player-AI interaction.

Which AI providers are supported?

Unity-MCP supports AI agents from Anthropic (Claude), OpenAI, Microsoft, and any other provider with no vendor lock-in.

Can I create custom tools?

Yes, the server is extensible - you can create custom tools in your project code by exposing C# methods as MCP tools.

On Hacker News

Recent discussion from the developer community.

• AI Acceleration for Unity Game Engine▲ 3💬 1
  Story by IvanMurzak · 2025-04-19

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