gstack
About
gstack is an open-source AI Agent toolkit created by Garry Tan, President & CEO of Y Combinator, designed to revolutionize software development. It systematically transforms mainstream AI coding agents like Claude Code into a highly efficient virtual engineering team, offering 23 specialized role-based tools and 8 core functionalities. These roles span the entire software development lifecycle, from product CEO-level strategic planning, designer-led UX optimization, engineering manager-driven architecture design and locking, code review, security auditing (OWASP/STRIDE), QA testing (via real browsers), to release engineering. gstack dramatically boosts individual developer productivity, enabling them to deliver high-quality code at an unprecedented speed and scale, as demonstrated by Garry Tan himself, achieving tens of thousands of lines of production code daily. Driven by slash commands and Markdown, this tool supports multiple AI coding agents, making it an ideal choice for technical founders, CEOs, first-time AI agent users, and seasoned engineers seeking rapid iteration and high-quality delivery.