Garry Tan's GStack Hits 10K Stars in 48 Hours: YC CEO's Claude Code Skills Framework Goes Viral

GitHub·medium signal

Y Combinator CEO Garry Tan open-sourced GStack, a 23-tool MIT-licensed toolkit that turns Claude Code into role-based agents (CEO, Designer, QA, Release Manager). The repo hit 10K GitHub stars in 48 hours, making it one of the fastest-growing dev tools of 2026. Tan claims averaging 10K LOC and 100 PRs per week using the setup. The toolkit runs a long-lived headless Chromium daemon and bets that structured prompts — not custom tooling — are the right abstraction layer for AI-assisted development.