Tan's claim: with gstack he ships at a run rate of ~810× his 2013 pace (logical lines/day, not raw LOC). In 60 days he shipped 3 production services and 40+ features solo — on the side of his full-time YC job.
Repo: github.com/garrytan/gstack — MIT, free, no premium tier.
The tool is process-driven, not just a collection of prompts. The skills run in the order of an actual sprint:
Think → Plan → Build → Review → Test → Ship → Reflect
Each skill feeds the next:
/office-hours writes a design doc → read by /plan-ceo-review/plan-eng-review writes a test plan → consumed by /qa/review finds bugs → /ship verifies the fixesFor solo founders with the classic "too many projects at once" energy, this is the structure that's been missing.
Open Claude Code and paste this prompt — Claude handles the rest:
Install 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.
From the repo root:
(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"
No vendoring, no version drift, automatic update check per session (throttled to 1×/hour, silent).
gstack runs on 10 AI coding agents — not just Claude. Setup auto-detects what you have installed:
git clone --single-branch --depth 1 https://github.com/garrytan/gstack.git ~/gstack
cd ~/gstack && ./setup
Target a specific one with ./setup --host <name>: Codex CLI, OpenCode, Cursor, Factory Droid, Slate, Kiro, Hermes, GBrain.
/office-hours — describe what you're building. Tan's "YC Office Hours" skill asks 6 forcing questions that reframe your idea before you write code./plan-ceo-review on any feature idea — finds the 10-star product hidden in your request./review on any branch with changes./qa on your staging URL — opens a real browser, clicks through flows, finds bugs, fixes them, generates regression tests.| Skill | Role | What it does |
|---|---|---|
/office-hours | YC Office Hours | 6 forcing questions, reframes your product before coding |
/plan-ceo-review | CEO/Founder | Finds the 10-star product. 4 modes: Expansion, Selective, Hold, Reduction |
/plan-eng-review | Eng Manager | Architecture, data flow, edge cases, tests — before coding |
/plan-design-review | Senior Designer | Rates every design dimension 0–10, AI-slop detection |
/autoplan | Review pipeline | One-shot: CEO → Design → Eng → DX, fully automated |
/review | Staff Engineer | Finds production bugs, auto-fixes obvious ones |
/qa | QA Lead | Real browser, real clicks, fixes bugs, regression tests |
/cso | Chief Security Officer | OWASP Top 10 + STRIDE threat model, 0 false positives |
/ship | Release Engineer | Sync, tests, coverage audit, PR — end-to-end |
/land-and-deploy | Release Engineer | Merge PR, wait for CI, check production health |
/design-shotgun | Design Explorer | 4–6 AI mockup variants, comparison board, iteration |
/design-html | Design Engineer | Mockup → production-ready HTML/CSS, framework-aware |
/investigate | Debugger | Root-cause debugging, Iron Law: no fix without investigation |
/codex | Second Opinion | Independent review via OpenAI Codex CLI |
/careful /freeze /guard | Safety | Protection against destructive commands & accidental edits |
Parallel sprints. With tools like Conductor you can run 10–15 Claude Code sessions simultaneously — each in its own workspace. One session runs /office-hours for a new idea, another /review on a PR, a third implements a feature, a fourth tests via /qa. The sprint structure is what makes parallelism possible in the first place.
Smart review routing. CEO review for a backend bugfix? Unnecessary. Design review for infra changes? Also no. gstack automatically detects which reviews are appropriate.
Browser eyes. /qa opens a real Chromium, clicks through flows, finds bugs, fixes them atomically with regression tests. /open-gstack-browser gives you a dedicated browser variant with anti-bot stealth, sidebar agent and cookie import.
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