unity-cli setup

unity-cli exposes a running Unity Editor to the shell through the u command. It drives play mode, asset refresh, console reads, Test Runner, GameObject/Component edits, menu items, builds, and screenshots by talking to a local Relay Server over TCP. This skill covers installing it, getting connected, and wiring it into Claude Code.

When this skill applies

• "set up unity-cli" / "let me control Unity from the shell"
• "u says connection refused" / "commands time out"
• "run Unity tests from CI without opening the Editor by hand"
• "register unity-cli with Claude Code"

1. Installation

Install unity-cli per the project README. It is a Python CLI, typically installed as a uv (or pipx) tool so u lands on your PATH: