youichi-uda/unity-mcp-pro-plugin

Unity Package Manager → Add package from git URL: https://github.com/youichi-uda/unity-mcp-pro-plugin.git
then build the MCP server: cd server && npm install && npm run build

Usage

• •configure your AI client to launch node /path/to/server/build/index.js
• •plugin auto-connects on editor start; use Window → Unity MCP Pro for status

Key features

• ✓280+ tools across 50 categories: scene, GameObjects, scripts, prefabs, physics, lighting, animation, materials, terrain, particles, audio, UI, build pipeline, input simulation, screenshots, testing, 2D, timeline, splines, ECS, netcode, XR
• ✓every operation goes through Unity's Undo system (Ctrl+Z)
• ✓production-grade WebSocket with heartbeat, auto-reconnect + exponential backoff, port scanning 6605–6609
• ✓smart type parsing (string → Vector3/Color/Quaternion)
• ✓domain-reload safe
• ✓multi-editor support via UNITY_MCP_PORT env var
• ✓built-in Server Setup window

Best for

Letting an AI drive Unity scene/asset editing and game development workflows.

Caveats

• ⚠requires Unity 2021.3 LTS+ and Node.js 18+
• ⚠plugin is the Unity-side component — the MCP server comes separately
• ⚠paid pro features via Unity Asset Store