Garry Tan, the CEO of Y Combinator, open-sourced 55 ready-made agents for Claude Code
Each agent is a slash command in plain Markdown with its own role and rules. 134k stars, MIT.
What is inside:
> 7 for browser work and scraping
> 6 for product planning
> 6 for design
> 6 for memory and retros
> 5 for code review and debugging
> 5 for security and guardrails
> 5 for QA and performance
> 5 for shipping and deploy
> 5 for iOS apps
> 3 for docs
They hand work to each other. /office-hours writes a design doc, the plan reviewers read it, /qa and /ship check against it.
Clone it into ~/.claude/skills/gstack, run ./setup, then try /review on any branch.