# Unity MCP Server (MCP server)

> Unity MCP Server is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Make 3D games in Unity Engine with AI. MCP Server… It has 4,391 GitHub stars, is released under the Apache-2.0 license and runs locally with docker run -i --rm -e UNITY_MCP_PORT -e UNITY_MCP_PLUGIN_TIMEOUT -e UNITY_MCP_CLIENT_TRANSPORT docker.io/ivanmurzakdev/unity-mcp-server:0.17.1.

Make 3D games in Unity Engine with AI. MCP Server + Plugin for Unity Editor and Unity games. AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/IvanMurzak/Unity-MCP |
| GitHub stars | 4,391 |
| License | Apache-2.0 |
| Language | C# |
| Transport | stdio |
| Packages | docker: docker.io/ivanmurzakdev/unity-mcp-server:0.17.1 |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Developer tools |
| Latest release | 0.93.2 (Sep 27, 2026) |
| Last commit | Oct 4, 2026 |
| MCP registry name | io.github.IvanMurzak/Unity-MCP |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "unity-mcp-server": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "UNITY_MCP_PORT",
        "-e",
        "UNITY_MCP_PLUGIN_TIMEOUT",
        "-e",
        "UNITY_MCP_CLIENT_TRANSPORT",
        "docker.io/ivanmurzakdev/unity-mcp-server:0.17.1"
      ],
      "env": {
        "UNITY_MCP_PORT": "your-value",
        "UNITY_MCP_PLUGIN_TIMEOUT": "your-value",
        "UNITY_MCP_CLIENT_TRANSPORT": "your-value"
      }
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --env UNITY_MCP_PORT=your-value --env UNITY_MCP_PLUGIN_TIMEOUT=your-value --env UNITY_MCP_CLIENT_TRANSPORT=your-value --transport stdio unity-mcp-server -- docker run -i --rm -e UNITY_MCP_PORT -e UNITY_MCP_PLUGIN_TIMEOUT -e UNITY_MCP_CLIENT_TRANSPORT docker.io/ivanmurzakdev/unity-mcp-server:0.17.1
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "unity-mcp-server": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "UNITY_MCP_PORT",
        "-e",
        "UNITY_MCP_PLUGIN_TIMEOUT",
        "-e",
        "UNITY_MCP_CLIENT_TRANSPORT",
        "docker.io/ivanmurzakdev/unity-mcp-server:0.17.1"
      ],
      "env": {
        "UNITY_MCP_PORT": "your-value",
        "UNITY_MCP_PLUGIN_TIMEOUT": "your-value",
        "UNITY_MCP_CLIENT_TRANSPORT": "your-value"
      }
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "unity-mcp-server": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "UNITY_MCP_PORT",
        "-e",
        "UNITY_MCP_PLUGIN_TIMEOUT",
        "-e",
        "UNITY_MCP_CLIENT_TRANSPORT",
        "docker.io/ivanmurzakdev/unity-mcp-server:0.17.1"
      ],
      "env": {
        "UNITY_MCP_PORT": "your-value",
        "UNITY_MCP_PLUGIN_TIMEOUT": "your-value",
        "UNITY_MCP_CLIENT_TRANSPORT": "your-value"
      }
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

## Environment variables

- `UNITY_MCP_PORT`: Client -> Server <- Plugin connection port (default: 8080)
- `UNITY_MCP_PLUGIN_TIMEOUT`: Plugin -> Server connection timeout (ms) (default: 10000)
- `UNITY_MCP_CLIENT_TRANSPORT`: Client -> Server transport type: stdio or http (default: http)

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