Unity MCP

What IvanMurzak/Unity-MCP MCP server does

IvanMurzak/Unity-MCP MCP server adds an MCP interface to Unity projects. Its main integration runs inside the Unity Editor, where an AI agent can work with project content and development tasks. The project also supports Unity Runtime, allowing MCP-connected functionality to be used from a compiled game rather than only from the editor.

The documented use cases include automating Unity workflows, generating game code, developing and testing mechanics, diagnosing project problems, and enabling AI-driven behavior in games. Runtime access can support scenarios such as dynamic non-player-character behavior, in-game debugging, and interaction between players and an AI system.

How it works

The Unity package exposes more than 70 built-in MCP tools grouped into areas such as project and asset operations. An MCP client connects to the Unity integration, then sends requests that an AI agent translates into Unity actions. The repository also describes a skills system that can generate AI guidance based on the operating system, Unity version, and installed project plugins.

Deployment can be local through stdio or remote through HTTP, depending on configuration. The project is designed to work with agents from different providers, including Anthropic, OpenAI, and Microsoft, rather than requiring one model vendor.

Setup and configuration

Installation can begin with the downloadable Unity package or with the OpenUPM package identifier com.ivanmurzak.unity.mcp. After adding the plugin, open the Unity project and use the Window/AI Game Developer interface. The documented setup flow can automatically generate skills or configure the MCP connection manually.

The repository also documents a command-line workflow using unity-mcp-cli. That workflow installs the Unity plugin into a project, can sign in to ai-game.dev through an OAuth device flow, opens the project, and can configure skills for a selected agent. The CLI is an installation and setup path rather than the Unity MCP server itself.

Tools and capabilities

IvanMurzak/Unity-MCP MCP server includes built-in tools for Unity Editor work, with the full registry maintained separately by the project. The supplied examples include copying assets and creating folders. The documented capability areas include:

• Managing project assets and other Unity content
• Generating and modifying game code
• Running tests for game mechanics
• Investigating and fixing project issues
• Working with Unity Runtime inside compiled games
• Extending the integration with custom tools written in project code

The README describes the tools as available after installation without additional tool-specific configuration.

Limitations and notes

The provided material does not identify a specific MCP client configuration file or a universal command that directly launches the server. The Unity plugin, project configuration, and optional CLI workflow are separate parts of setup. Runtime use also depends on incorporating the integration into a compiled Unity game; editor connectivity alone does not imply that every game build exposes the same capabilities.

The repository lists Claude Desktop, Cursor, Windsurf, Cline, and several other coding or AI clients as supported or shown integrations. Tool details, including the complete built-in registry, are maintained in the project documentation rather than in the supplied README excerpt.