Unity Code MCP

Like Unity Code Pro, Unity Code MCP helps you work on your Unity game by communicating with Unity through our Visual Studio Code package. The key difference is simple: Unity Code Pro is for humans, while Unity Code MCP is for AI agents.

With Unity Code MCP, AI agents can iterate on your game code faster than ever before.

Why use it

• Built in Rust, lightweight, and fast
• Focused on coding workflows, not generic IDE operations
• Returns concise, relevant output to reduce token usage
• Supports iterative agent workflow: write code → compile → fix → test

Core tools

Unity Code MCP exposes two tools:

Asset Database Refresh

• Triggers Unity asset refresh and compilation
• Returns compile errors and refresh-time warnings/logs
• Handles Unity domain reload scenarios

Test Execution

• Runs Unity tests with detailed result output
• Includes stack traces and logs for failed tests
• Supports EditMode and PlayMode tests

Installation

Prerequisites

• Unity 6.0+

Step 1: Install the required Unity package

Install Visual Studio Code Editor for Unity.

Step 2: Get the MCP binary

Download the MCP binary from Releases.

Step 3: Configure your AI assistant

Cursor / Trae

{
  "mcpServers": {
    "unity-code": {
      "command": "/path/to/unity_code_mcp",
      "env": {
        "UNITY_PROJECT_PATH": "${workspaceFolder}"
      }
    }
  }
}

VS Code MCP Extension

{
  "mcp.servers": {
    "unity-code": {
      "command": "/path/to/unity_code_mcp",
      "env": {
        "UNITY_PROJECT_PATH": "${workspaceFolder}"
      }
    }
  }
}

Claude Desktop

{
  "mcpServers": {
    "unity-code": {
      "command": "/path/to/unity_code_mcp"
    }
  }
}