Builds node-based Editor tools with Unity Graph Toolkit (GTK) on Unity 6.6+: graphs, nodes, ports and validation, State Machine API tools on 6.7+, and runtime assets via a scripted importer. Use for custom graph, node or state machine editors, or migrating a GraphView tool. Not for Shader Graph, VFX Graph or Animator Controllers.
Install
npx skills add Unity-Technologies/unity-agent-plugin --skill build-gtknpx skills add Unity-Technologies/unity-agent-plugin --skill build-gtk -a claude-code -gnpx skills add Unity-Technologies/unity-agent-plugin --skill build-gtk -a codex -ggemini skills install https://github.com/Unity-Technologies/unity-agent-plugin.git --path skills/build-gtkgh skill install Unity-Technologies/unity-agent-plugin build-gtkgit 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/build-gtk ~/.claude/skills/build-gtk # Claude Code
cp -R /tmp/Unity-Technologies__unity-agent-plugin/skills/build-gtk ~/.agents/skills/build-gtk # Codex, Cursor, Gemini CLI, Copilot, OpenCode