Garry Tan's open-source software factory turns Claude Code into a virtual engineering team — 44 specialists and power tools, all free, MIT licensed. Below: every command grouped by the sprint it runs in, with one-click copy. Click any /command to copy it.
Requirements: Claude Code, Git, Bun v1.0+ (and Node.js on Windows).
git clone --single-branch --depth 1 https://github.com/garrytan/gstack.git ~/.claude/skills/gstack && cd ~/.claude/skills/gstack && ./setupInstall gstack: run `git clone --single-branch --depth 1 https://github.com/garrytan/gstack.git ~/.claude/skills/gstack && cd ~/.claude/skills/gstack && ./setup` then add a "gstack" section to CLAUDE.md that says to use the /browse skill from gstack for all web browsing, never use mcp__claude-in-chrome__* tools, and lists the available skills. Then ask if I also want to add gstack to the current project so teammates get it.(cd ~/.claude/skills/gstack && ./setup --team) && ~/.claude/skills/gstack/bin/gstack-team-init required && git add .claude/ CLAUDE.md && git commit -m "require gstack for AI-assisted work"Think → Plan → Build → Review → Test → Ship → Reflect. Each skill feeds the next.
/office-hoursSix forcing questions that reframe your product. Pushes back on your framing, challenges premises, and writes a design doc that feeds every downstream skill.
/autoplanOne command, fully reviewed plan. Runs CEO -> design -> eng -> DX automatically, auto-detects which apply, and surfaces only the taste decisions for your approval.
/plan-ceo-reviewRethink the problem. Find the 10-star product hiding inside the request. Four modes: Expansion, Selective Expansion, Hold Scope, Reduction.
/plan-eng-reviewLock architecture, data flow, diagrams, edge cases, and tests. Forces hidden assumptions into the open.
/plan-design-reviewRates each design dimension 0-10, shows what a 10 looks like, then edits the plan to get there. AI-slop detection. One question per design choice.
/plan-devex-reviewInteractive DX review: personas, competitor TTHW benchmarks, your magical moment, friction tracing. Three modes, 20-45 forcing questions.
/design-consultationBuild a complete design system from scratch. Researches the landscape, proposes creative risks, generates realistic product mockups, writes DESIGN.md.
/specTurn vague intent into a precise, executable spec in five phases with a Codex quality gate and secret redaction. --execute spawns claude -p in a fresh worktree.
/design-shotgunGenerates 4-6 AI mockup variants, opens a comparison board in your browser, collects feedback, and iterates. Taste memory learns what you pick.
/design-htmlTurn a mockup into production HTML/CSS with Pretext computed layout: text reflows, heights adjust. 30KB, zero deps. Detects React/Svelte/Vue.
/reviewFind the bugs that pass CI but blow up in production. Auto-fixes the obvious ones, flags completeness gaps.
/codexIndependent review from OpenAI Codex CLI. Three modes: pass/fail gate, adversarial challenge, open consultation. Cross-model analysis when paired with /review.
/csoOWASP Top 10 + STRIDE threat model. Zero-noise: 8/10+ confidence gate, independent verification, and a concrete exploit scenario per finding.
/investigateSystematic root-cause debugging. Iron Law: no fixes without investigation. Traces data flow, tests hypotheses, stops after 3 failed fixes.
/qaTest your app, find bugs, fix them with atomic commits, re-verify. Auto-generates a regression test for every fix.
/qa-onlySame methodology as /qa but report only. A pure bug report with no code changes.
/design-reviewThe /plan-design-review audit, then fixes what it finds. Atomic commits, before/after screenshots.
/devex-reviewLive onboarding audit: navigates docs, tries the getting-started flow, times TTHW, screenshots errors, and compares against your plan scores.
/browseGive the agent eyes: real Chromium, real clicks, real screenshots, ~100ms per command.
/benchmarkBaseline page load times, Core Web Vitals, and resource sizes. Compare before/after on every PR.
/pair-agentShare your browser with any AI agent (OpenClaw, Hermes, Codex, Cursor). Scoped tokens, tab isolation, rate limiting, activity attribution.
/shipSync main, run tests, audit coverage, push, open the PR. Bootstraps a test framework if you do not have one.
/land-and-deployMerge the PR, wait for CI and deploy, verify production health. One command from "approved" to "verified in production."
/canaryPost-deploy monitoring loop. Watches for console errors, performance regressions, and page failures.
/document-releaseUpdate every doc to match what you shipped. Builds a Diataxis coverage map so gaps show in the PR. Auto-invoked by /ship.
/document-generateGenerate missing docs from scratch with the Diataxis framework after reading the codebase.
/retroTeam-aware weekly retro: per-person breakdowns, shipping streaks, test-health trends. /retro global spans all projects and AI tools.
/learnReview, search, prune, and export what gstack learned. Patterns and preferences compound across sessions.
Standalone power tools — pull them in whenever you need them.
/carefulWarns before destructive commands (rm -rf, DROP TABLE, force-push). Say "be careful" to activate. Override any warning.
/freezeRestrict file edits to one directory so the agent cannot touch unrelated code while debugging.
/guard/careful + /freeze in one command. Maximum safety for prod work.
/unfreezeRemove the /freeze boundary.
/open-gstack-browserLaunch AI-controlled Chromium with sidebar, anti-bot stealth, and auto model routing (Sonnet for actions, Opus for analysis).
/connect-chromeLaunch GStack Browser — Chromium with the sidebar extension baked in.
/setup-browser-cookiesImport cookies from your real browser (Chrome, Arc, Brave, Edge) into the headless session to test authenticated pages.
/setup-gbrainZero to running gbrain in under 5 minutes. PGLite local, an existing Supabase URL, or auto-provision a new Supabase project.
/sync-gbrainRe-index this repo into gbrain and refresh the search-guidance block in CLAUDE.md. Idempotent; safe to re-run.
/ios-qaDrive a real iPhone over USB CoreDevice. Capability-tier allowlist, per-device session lock, audit log. --tailnet exposes it to remote agents.
/ios-fixAutonomous iOS bug fixer.
/ios-design-reviewDesigner's-eye HIG audit on real hardware.
/ios-cleanRemove the DebugBridge SPM package and all #if DEBUG wiring.
/ios-syncRegenerate the iOS debug bridge against the latest upstream templates.
/gstack-upgradeUpgrade gstack to latest. Detects global vs vendored install, syncs both, shows what changed.
/setup-deployOne-time setup for /land-and-deploy. Detects your platform, production URL, and deploy commands.
| Building for | Plan stage | Live audit |
|---|---|---|
| End users (UI, web, mobile) | ||
| Developers (API, CLI, SDK, docs) | ||
| Architecture (data flow, perf, tests) | ||
| All of the above | — |
cd ~/.claude/skills/gstack && git pull && ./setupcd ~/.claude/skills/gstack && bun install && bun run buildcd ~/.claude/skills/gstack && ./setup --no-prefix~/.claude/skills/gstack/bin/gstack-uninstall