Adds, removes, upgrades, and discovers Unity (UPM) packages from outside the Editor. Use for headless or CI package installs, verifying package IDs and versions, or choosing which packages a game needs. The Unity CLI doesn't manage packages.
Install
npx skills add Unity-Technologies/unity-agent-plugin --skill unity-package-managementnpx skills add Unity-Technologies/unity-agent-plugin --skill unity-package-management -a claude-code -gnpx skills add Unity-Technologies/unity-agent-plugin --skill unity-package-management -a codex -ggemini skills install https://github.com/Unity-Technologies/unity-agent-plugin.git --path skills/unity-package-managementgh skill install Unity-Technologies/unity-agent-plugin unity-package-managementgit clone --depth 1 https://github.com/Unity-Technologies/unity-agent-plugin /tmp/Unity-Technologies__unity-agent-plugin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/Unity-Technologies__unity-agent-plugin/skills/unity-package-management ~/.claude/skills/unity-package-management # Claude Code
cp -R /tmp/Unity-Technologies__unity-agent-plugin/skills/unity-package-management ~/.agents/skills/unity-package-management # Codex, Cursor, Gemini CLI, Copilot, OpenCode