UnityMCP by isuzu-shiranui is an open-source MCP server that runs inside the Unity Editor.
UnityMCP lets your agent drive the editor you have open. Satura Space shows you the running game, and adds four things it doesn't have.
The agent sets up the moment and opens Unity's real Inspector on just the fields that matter. You tune it by feel.
Run agents in parallel, each in its own side Unity project, streamed beside the game. Open a Tuner on any of them.
Up to four synced editors, each streamed with its own input. One handle call starts every player on the same frame.
Ask about anything you don't know. Drift walks you through the UI, points at the field and explains what to tweak in the Inspector.
| Satura Space | UnityMCP (isuzu) | |
|---|---|---|
| The Tuner: an Inspector scoped to what matters | ✓Yes | ✕No |
| Ask Drift: a guide that points at the field | ✓Yes, in alpha | ✕No |
| Parallel agents in side projects | ✓Scratchpads, one Unity each | ✕Not listed |
| Multiplayer testing | ✓Four synced editors | ✕Not listed |
| The running game, beside the agent | ✓Streamed, with your input | ✕Your own editor window |
| Agent plays and checks its work | ✓Handles, video and a report | ✓Input record and replay |
| Screenshots and video | ✓Both, 60 fps video | Recorder; screenshots not listed |
| Play Mode control | ✓Yes | Status only |
| Run C# in the editor | ✓Yes, unity.exec | ✓C# snippets |
| Run tests | ✓Yes | ✓Test Framework |
| C# hot-reload in Play Mode | ✓Method bodies | ✕Not listed |
| Unity runs hidden | ✓Yes | ✕Not listed |
| Your own agent (which ones) | ✓CLI agents | ✓Claude Code, Cursor, Codex, Gemini |
| Works inside your IDE | ✕No, desktop app; Cursor connects over MCP | ✓VS Code, Cursor |
| Open source | ✕No | ✓Yes, MIT |
| Unity versions | Unity 6 only, Mono | 2022.3 and later |
| Platforms | macOS Apple Silicon, Windows x64 | Windows, macOS, Linux |
| Price | $19/mo, $15 annual, 7-day trial | Free, MIT |
Yes, it is MIT-licensed. You still pay for your agent. Satura Space is $19 a month, or $15 billed annually, with a 7-day trial and no card.
Yes. Satura Space registers its Unity MCP server for Claude Code, Codex and Cursor automatically, and any MCP client can be pointed at it.
Satura Space needs Unity 6 with the Mono scripting backend.
Try it for seven days. No card needed.