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Unity MCP ✨

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A Unity MCP server that allows MCP clients like Claude Desktop or Cursor to perform Unity Editor actions.

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Overview

Unity MCP is a Unity package that facilitates communication between Unity and Large Language Models (LLMs) like Claude Desktop through the Model Context Protocol (MCP). It serves as a bridge for developers to automate workflows and control the Unity Editor programmatically.

To use Unity MCP, download the package via the Unity package manager and set up a Python server. Configure the MCP server in Unity to connect with tools like Claude Desktop or Cursor, and start sending commands to interact with LLMs.

  • Bidirectional communication between Unity and LLMs. - Asset management for creating and manipulating Unity assets. - Scene control for managing scenes and objects. - Material editing capabilities. - Script integration for viewing and updating Unity scripts. - Automation of Unity Editor functions.
  1. Automating repetitive tasks in Unity projects.
  2. Enhancing game development workflows with LLMs.
  3. Programmatically managing assets and scenes in Unity.

Add to your AI client

Use these steps to connect Unity MCP ✨ in Cursor, Claude, VS Code, and other MCP-compatible apps. The same JSON appears in the Use with menu above for one-click copy.

Cursor

Add this to your .cursor/mcp.json file in your project root, then restart Cursor.

.cursor/mcp.json

{
  "mcpServers": {
    "unity-mcp-justinpbarnett": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-unity-mcp-justinpbarnett"
      ]
    }
  }
}

Claude Desktop

Add this server entry to the mcpServers object in your Claude Desktop config, then restart the app.

~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

{
  "mcpServers": {
    "unity-mcp-justinpbarnett": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-unity-mcp-justinpbarnett"
      ]
    }
  }
}

Claude Code

Add this to your project's .mcp.json file. Claude Code will detect it automatically.

.mcp.json (project root)

{
  "mcpServers": {
    "unity-mcp-justinpbarnett": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-unity-mcp-justinpbarnett"
      ]
    }
  }
}

VS Code (Copilot)

Add this to your .vscode/mcp.json file. Requires the GitHub Copilot extension with MCP support enabled.

.vscode/mcp.json

{
  "servers": {
    "unity-mcp-justinpbarnett": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-unity-mcp-justinpbarnett"
      ]
    }
  }
}

Windsurf

Add this to your Windsurf MCP config file, then restart Windsurf.

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "unity-mcp-justinpbarnett": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-unity-mcp-justinpbarnett"
      ]
    }
  }
}

Cline

Open Cline settings, navigate to MCP Servers, and add this server configuration.

Cline MCP Settings (via UI)

{
  "mcpServers": {
    "unity-mcp-justinpbarnett": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-unity-mcp-justinpbarnett"
      ]
    }
  }
}

FAQ

Can Unity MCP work with any LLM?

Yes, Unity MCP is designed to work with any MCP-compliant LLM, including Claude Desktop.

Is Unity MCP free to use?

Yes, Unity MCP is an open-source project and is free to use.

What programming languages are required?

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