Unity Graph Toolkit
/build-gtk
Build node-based Editor tools with Unity Graph Toolkit on Unity 6.6+: graphs, nodes, ports, validation and state machine tools.
- GitHub stars
- 1,118 (repository stars as of 2026-10-21)
- License
- Unity Companion License
- Last commit
- 2026/10/20
- By
- Unity Technologies
Part of
Unity Skills (official)
Unity's own collection of skills for AI coding agents: prompts, slash commands and tools built for Unity workflows.
Listed from the author's README. GameSkill has not run this end to end yet. Agent support and install steps are as documented by the author.
Install
npx skills add Unity-Technologies/skills --skill build-gtkInstalls only this skill. Add -a claude-code (puts it in .claude/skills/), -a codex or -a cursor (.agents/skills/) to choose the agent, and -g to install it for your user instead of the project.
Commands are copied from the project's README. Check the repository before running anything on your machine.
Install for a specific agent
| Agents | -a | Folder |
|---|---|---|
| Claude Code | claude-code | .claude/skills/ |
| Codex | codex | .agents/skills/ |
| Cursor | cursor | .agents/skills/ |
| Gemini CLI | gemini-cli | .agents/skills/ |
| GitHub Copilot | github-copilot | .agents/skills/ |
| OpenCode | opencode | .agents/skills/ |
| Windsurf | windsurf | .windsurf/skills/ |
Add -a <flag> to the command. These are project folders; add -g to install for your user account instead.
What you get
- A verification step before the work is called done
- Bundled 4 reference docs the agent reads when needed
- Written for Unity 6.6+
Good fit
- Custom graph, node or state machine editors, or migrating a GraphView tool
Not for
- Shader Graph, VFX Graph or Animator Controllers
Try this prompt
Build a node-based dialogue editor with Unity Graph Toolkit.About this skill
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.
From the build-gtk SKILL.md in Unity-Technologies/skills.
What's inside
- Check the Editor version and pick the API
- Mental model
- Workflow A: build a graph tool
- Workflow B: build a state machine tool (Unity 6.7 and newer)
- Editing a graph from code
- Decisions
- Constraints
- Verify
- Topic map
Good to know
Maintained and published by Unity. Many skills drive the open Unity Editor through the Unity CLI instead of editing scene files by hand.
Requirements
- Unity 6.6+
- A Unity project
- Unity CLI (recommended: many skills drive the open Editor through it)
FAQ
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