gstack
- Category
- Claude Code Workflow System
- Author
- Garry Tan (Y Combinator CEO)
- Pricing
- Free / Open Source (MIT)
- GitHub Stars
- 31,800+
- Requires
- Claude Code, Git, Bun v1.0+
- Tools
- 15 slash commands: /plan-ceo-review, /ship, /qa, /review, /browse...
gstack turns Claude Code into a virtual software development team. Created by YC CEO Garry Tan, it provides 15 opinionated slash commands — each assigning Claude a specific professional role with defined priorities and constraints.
How It Works
Each slash command in gstack assigns Claude Code a distinct professional role — CEO, designer, engineering manager, release manager, doc engineer, or QA — with specific priorities and constraints. Instead of treating AI as a generic tool, gstack structures it into a team you can direct.
Impact
Garry Tan reports using gstack to write over 600,000 lines of production code in 60 days while running YC, achieving 10,000–20,000 usable lines per day. The project has accumulated over 31,800 GitHub stars since its March 2026 release.
- /plan-ceo-review — founder-level product rethinking
- /plan-eng-review — architecture, data flow, and test coverage planning
- /review — production bug detection and code audit
- /ship — automated release and deployment
- /qa — browser-based testing and visual verification
- /browse — browser automation for research