MCP Unity

Install

Manual install

{
  "mcpServers": {
    "mcp-unity": {
      "command": "node",
      "args": ["ABSOLUTE/PATH/TO/mcp-unity/Server~/build/index.js"]
    }
  }
}

This is third-party code. Review the repository files before installing.

What it does

MCP Unity gives an agent access to the Unity Editor over the Model Context Protocol. Through a set of tools the agent can work with scene objects, change components, install packages in the Package Manager, read project state and get step-by-step guidance for common tasks. The server runs on Node.js and a package is installed inside Unity via the Package Manager, after which a client such as Cursor, Claude Code, Codex or Windsurf connects over MCP.

Who it is for. For Unity game developers who want to drive the editor and project through an AI agent.

Example request

List the project's installed packages and add an empty controller object to the scene

Limitations

It needs Unity 6 or newer, Node.js 18 or newer and an open editor. Setup is multi-step: the Unity Package Manager package, then the server and the client config with an absolute path. The agent changes a real project, so version control matters.

How to disable. Remove the server entry from your MCP config and remove the MCP Unity package from the Package Manager.

MCP

Transport

stdio

Authentication

not required

Security check

• Changes objects and components in a real Unity project
• Can install packages into the project

README in short

The README describes an MCP plugin that connects the Unity Editor to AI clients over the Model Context Protocol. Setup takes several steps: Node.js 18 or newer, the MCP Unity package in the Package Manager, running the server and configuring the client via a config file with an absolute path. It offers tools for objects and components, package installs, reading project resources and guidance for common tasks. MIT licensed.

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