unity-mcp-plugin and UnityMCP
About unity-mcp-plugin
AnkleBreaker-Studio/unity-mcp-plugin
Unity MCP Plugin (UPM) — Editor bridge for AI-assisted game development. Enables Claude, Cursor & MCP-compatible AI to control Unity Editor with 268 tools: scenes, GameObjects, components, builds, profiling, Shader Graph, Amplify Shader Editor, terrain, physics, NavMesh & more. Free & open source.
Implements a stateful HTTP bridge on `localhost:7890` that persists across Play Mode domain reloads via SessionState, enabling real-time bidirectional control between MCP-compatible AI and the Unity Editor. Supports multi-instance editor discovery with automatic port affinity tracking and heartbeat-based session management to distinguish active from crashed editors. Conditionally exposes 268 tools across shader editors (Shader Graph, Amplify), multiplayer frameworks (MPPM), and profiling systems (Memory Profiler, Frame Debugger) based on installed packages.
About UnityMCP
isuzu-shiranui/UnityMCP
Unity Editor integration with Model Context Protocol (MCP) enabling AI assistants like Claude to interact with Unity projects. Features a TypeScript MCP server and C# Unity plugin with extensible command handler architecture, TCP/IP communication, and dynamic plugin discovery.
Supports all three MCP handler types (commands, resources, and prompts) with automatic discovery on both C# and TypeScript sides, enabling bidirectional AI-Unity workflows. The framework uses a scalable plugin architecture where custom handlers implement well-defined interfaces and are automatically registered via reflection, with communication serialized as JSON over TCP/IP between the Unity Editor and Claude Desktop. Includes built-in installer tooling for integrating the TypeScript MCP server with Claude Desktop configuration, plus sample handlers demonstrating code execution capabilities.
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