Just installed this mcp server as instructed. Lazy me didn't want to edit the claude.json by hand and let unity did that (as per instructions in README)
Open the Unity MCP window (Window > Unity MCP)
Click the "Configure Claude" button
The tool probably should just add the necessary entry instead of overwriting the file from scratch. Lost all my custom config that way.
Anyway, amazing tool. Looking forward to using it a lot, thanks! :)