gstack
Garry Tan's Claude Code setup: a team of specialist roles.
An open-source pack of slash-command skills that turn one agent into roles: product review, engineering planning, code review, QA with a real browser and release.
Install this skill pack
npx skills add https://github.com/garrytan/gstackRuns the open-source skills CLI in your own terminal. It asks which agents to add the skill to. Read what it tells your agent to do before you install it.
Install for your agent
Claude Code
Run this in your project
npx skills add https://github.com/garrytan/gstack -a claude-codeAdd
-gto install it for every project instead.Or ask Claude Code to do it
Install the skills in https://github.com/garrytan/gstack for Claude Code. Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .claude/skills/ in this project. Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.
Or copy the folder yourself
Copy the skill's folder from GitHub into
.claude/skills/for this project, or~/.claude/skills/for all your projects.Picked up in the current session, no restart needed.
Claude Code skills docsClaude.ai
Upload the skill
Download the skill's folder from GitHub and zip it, with the folder at the top of the ZIP.
- In Settings > Capabilities, turn on Code execution and file creation.
- Go to Customize > Skills, press +, then Create skill.
- Choose Upload a skill and pick the ZIP you downloaded.
Free, Pro and Max plans. On Team and Enterprise, an owner turns skills on in Organization settings first.
Claude.ai skills docsChatGPT
Upload the skill
Download the skill's folder from GitHub and zip it, with the folder at the top of the ZIP.
- Open Skills in ChatGPT and select Create.
- Select Upload from your computer and pick the ZIP you downloaded.
- Wait for ChatGPT's safety scan. A skill marked Needs Review asks you to check it before use.
Skills that rely on scripts or a terminal may not work unchanged in ChatGPT.
ChatGPT skills docsCodex
Run this in your project
npx skills add https://github.com/garrytan/gstack -a codexAdd
-gto install it for every project instead.Or ask Codex to do it
Install the skills in https://github.com/garrytan/gstack for Codex. Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .agents/skills/ in this project. Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.
Or copy the folder yourself
Copy the skill's folder from GitHub into
.agents/skills/for this project, or~/.agents/skills/for all your projects.Restart Codex if the skill does not show up.
Codex skills docsCursor
Run this in your project
npx skills add https://github.com/garrytan/gstack -a cursorAdd
-gto install it for every project instead.Or ask Cursor to do it
Install the skills in https://github.com/garrytan/gstack for Cursor. Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .cursor/skills/ in this project. Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.
Or copy the folder yourself
Copy the skill's folder from GitHub into
.cursor/skills/for this project, or~/.cursor/skills/for all your projects.Run it by typing / and the skill name in chat.
Cursor skills docsGitHub Copilot
Run this in your project
npx skills add https://github.com/garrytan/gstack -a github-copilotAdd
-gto install it for every project instead.Or ask GitHub Copilot to do it
Install the skills in https://github.com/garrytan/gstack for GitHub Copilot. Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .github/skills/ in this project. Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.
Or copy the folder yourself
Copy the skill's folder from GitHub into
.github/skills/for this project, or~/.copilot/skills/for all your projects.Works in Copilot CLI, the cloud agent and agent mode in VS Code and JetBrains.
GitHub Copilot skills docsAntigravity
Run this in your project
npx skills add https://github.com/garrytan/gstack -a antigravityAdd
-gto install it for every project instead.Or ask Antigravity to do it
Install the skills in https://github.com/garrytan/gstack for Antigravity. Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .agents/skills/ in this project. Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.
Antigravity skills docsOr copy the folder yourself
Copy the skill's folder from GitHub into
.agents/skills/for this project, or~/.gemini/config/skills/for all your projects.Gemini CLI
Run this in your project
npx skills add https://github.com/garrytan/gstack -a gemini-cliAdd
-gto install it for every project instead.Or ask Gemini CLI to do it
Install the skills in https://github.com/garrytan/gstack for Gemini CLI. Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .gemini/skills/ in this project. Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.
Or copy the folder yourself
Copy the skill's folder from GitHub into
.gemini/skills/for this project, or~/.gemini/skills/for all your projects.Run /skills to check it was found.
Gemini CLI skills docs
- Installs
- 42K across the pack, via skills.sh
- GitHub
- 133.4K stars ↗
- Last updated
- 16 Sept 2026
- Licence
- MIT
Works with
Key info
- Pricing
- Open source
- Category
- Skills
- Skill category
- Planning & workflow
- Works in
- Every agent listed here, including Claude.ai and ChatGPT
- Best for
- Beginner
- Made by
- Garry Tan, Y Combinator (community)
- Use it when
- You want your agent to take on roles such as product lead, reviewer and QA
Related reading
- Context engineering
Writing your first skill
You already have a skill in you: the thing you keep typing into every session. Write it down once.
Intermediate