
What is Gstack? Garry Tan's Open-Source Claude Code Virtual Engineering Team Explained
Gstack is the open-source Claude Code toolkit released by Y Combinator CEO Garry Tan in March 2026. It transforms a single AI assistant into a virtual team of CEO, Engineer, QA, and more. Includes 13 slash-command skills with real browser testing. Garry Tan shipped 600k+ lines of code in 60 days using it. Install in 30 seconds.

