gstack
Use Garry Tan's exact Claude Code setup: 23 opinionated tools that serve as CEO, Designer, Eng Manager, Release Manager, Doc Engineer, and QA
gstack is an MCP server that transforms Claude Code into a virtual engineering team of 23 specialized AI agents and 8 power tools, created by Y Combinator President Garry Tan. It provides opinionated slash commands that orchestrate a complete software development sprint—from product planning and architecture review through code review, QA testing, and deployment. Each skill acts as a distinct role (CEO, Engineering Manager, Designer, QA Lead, Security Officer) and feeds outputs into the next stage, creating an integrated workflow for solo builders and technical founders who want to ship production-quality code with the velocity of a full team.
Key Features
Use Cases
- 01Solo technical founders shipping production features end-to-end with CEO-level strategic review, engineering architecture planning, and automated QA testing
- 02Running security audits with /cso that performs OWASP Top 10 and STRIDE threat modeling with false positive filtering and concrete exploit scenarios
- 03Debugging production issues systematically with /investigate that traces data flow, tests hypotheses, and enforces the Iron Law of no fixes without investigation
- 04Conducting weekly engineering retrospectives with /retro that provides per-person breakdowns, shipping streaks, test health trends, and cross-project analysis
- 05Building design systems from scratch with /design-consultation that researches the landscape, proposes creative risks, and generates realistic product mockups
- 06Testing authenticated user flows by importing real browser cookies via /setup-browser-cookies and running /qa against staging URLs with live Chromium automation
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gstack — FAQ
What is gstack and what does it do?+
gstack is an MCP server that turns Claude Code into a virtual engineering team with 23 specialized AI agents. It provides slash commands for every stage of software development—product planning, architecture review, code review, QA testing, security audits, and deployment—with each skill feeding outputs into the next to create an integrated workflow.
How do I install gstack for Claude Code?+
Clone the repo with 'git clone --single-branch --depth 1 https://github.com/garrytan/gstack.git ~/.claude/skills/gstack && cd ~/.claude/skills/gstack && ./setup' and add a gstack section to CLAUDE.md listing the available skills. For team mode with auto-updates, run the setup with --team flag and use gstack-team-init to bootstrap your repo.
Which AI clients and agents does gstack work with?+
gstack works with Claude Code (primary), OpenClaw (with ACP session spawning and ClawHub skills), OpenAI Codex CLI, OpenCode, Cursor, Factory Droid, Slate, Kiro, Hermes, and GBrain. The setup script auto-detects installed agents or you can target specific ones with the --host flag.
What are the prerequisites and do I need API keys?+
You need Claude Code, Git, Bun v1.0+, and Node.js (Windows only). No API keys are required for core functionality. Optional: Chrome/Arc/Brave/Edge for cookie import, Supabase for GBrain memory integration, and OpenAI Codex CLI for cross-model code review with the /codex skill.
Is gstack free and open source?+
Yes, gstack is completely free and released under the MIT license. All 23 skills, 8 power tools, and team auto-update infrastructure are open source and available for forking and customization.
How does the integrated workflow between skills work?+
Each skill outputs structured artifacts (design docs, test plans, audit results) that downstream skills automatically read. For example, /office-hours writes a design doc that /plan-ceo-review reads, /plan-eng-review writes a test plan that /qa picks up, and /review flags bugs that /ship verifies are fixed before opening the PR.
How do I install gstack?+
Open the source repository on GitHub and follow its README. gstack is a mcp server — MCP Agents Market links you directly to the official repo.
Is gstack free?+
gstack is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.