Yamu (Unity Editor)

This MCP server enables AI coding agents to autonomously iterate through edit-compile-debug cycles in Unity development by providing compilation feedback mechanisms through a C# HTTP server running in the Unity Editor and a Node.js MCP bridge. Built by Keijiro Takahashi as a proof-of-concept for macOS, it offers two core tools: compile_and_wait which triggers Unity Editor compilation and waits for completion, and get_errors which retrieves compilation errors from the last build. The implementation features real-time compilation status monitoring, error collection with file/line details, and polling-based completion detection, making it valuable for AI agents that need to write Unity C# code, test compilation results, and automatically fix errors without manual Unity Editor interaction.