Everything you need to know about gstack and AI-powered development
gstack is Garry Tan's exact Claude Code setup consisting of 23 opinionated tools that serve as CEO, Designer, Engineering Manager, Release Manager, Documentation Engineer, and QA. It turns Claude Code into a virtual engineering team that helps developers ship products faster than traditional teams.
Garry Tan is the President & CEO of Y Combinator, with experience as an engineer/PM/designer at Palantir, co-founder of Posterous (sold to Twitter), and builder of Bookface (YC's internal social network). He's worked with thousands of startups including Coinbase, Instacart, and Rippling.
gstack enables developers to achieve 810× productivity gains compared to traditional coding by using AI agents for specialized tasks. It allows running 10-15 parallel development sprints simultaneously with proper workflow management, turning a single developer into a virtual engineering team.
gstack works with 10+ AI coding agents including Claude Code, OpenAI Codex CLI, OpenCode, Cursor, Factory Droid, Slate, Kiro, Hermes, and GBrain. It auto-detects installed agents and can be configured for specific hosts with different skill installation paths.
gstack provides 23 specialist skills including CEO product reviews, engineering architecture planning, design reviews, QA testing, security audits, release management, and documentation generation. It includes power tools like cross-model benchmarking, design taste learning, and iOS device testing.
Yes, gstack is completely free with an MIT license. There's no premium tier, no waitlist, and no hidden costs. It's open source and available for anyone to fork, modify, and use commercially.
gstack requires Claude Code, Git, Bun v1.0+, and Node.js (Windows only). It works across macOS, Linux, and Windows. The browser-based features require a modern Chromium browser for optimal performance.
Installation takes just 30 seconds: git clone --single-branch --depth 1 https://github.com/garrytan/gstack.git ~/.claude/skills/gstack && cd ~/.claude/skills/gstack && ./setup. For team mode, use the additional team initialization script.
GBrain is a persistent knowledge base for AI agents that gstack integrates with. It provides cross-session memory, code indexing, and search capabilities. Setup can be done with one command: /setup-gbrain with options for Supabase, PGLite, or remote MCP servers.
gstack includes multiple security layers: OWASP Top 10 + STRIDE threat modeling with Chief Security Officer skills, prompt injection defense for browser agents, secret scanning, and optional safety guardrails. All code reviews include security considerations.
Yes, gstack integrates seamlessly with OpenClaw through ClawHub. Install the gstack-native skills for product interrogation, CEO reviews, investigation, and retrospectives. OpenClaw agents can spawn Claude Code sessions with gstack skills automatically.
Contributions are welcome! Check the GitHub repository for open issues, documentation guides, and development setup instructions. The project follows standard open source practices with clear contribution guidelines and maintainer support.