Run gstack in the cloud.
With your team.
The full gstack workflow (Think, Plan, Build, Review, QA, Ship) running on your real codebase in the cloud. No local setup. Team collaboration built in. Start in 60 seconds.
No credit card. Works on your real repo.
What is gstack
A complete dev workflow
built by Garry Tan.
gstack is an open-source Claude Code system that models a full software sprint: rethink the product like a CEO, plan the architecture like an engineer, build with AI agents, review with a designer's eye, QA in a real browser, and ship with confidence. 10,000 GitHub stars in 48 hours.
How it works
Connect your repo. Run gstack.
Connect your GitHub repo
Install the Lightsprint GitHub app. Your code stays in your repo. We run the agents in isolated cloud environments.
Run any gstack phase
Think, Plan, Build, Review, QA, Ship. Each phase runs as a cloud agent with full context of your codebase, your team's decisions, and previous phases.
Collaborate and ship
Your whole team sees the output. Review plans together, preview changes live, approve and merge, all from the browser. No local setup required.
Self-hosted gstack
With Lightsprint
The full workflow
Five reviews. One plan.
Every change passes through specialized review agents before it ships, so the plan is bulletproof by the time anyone writes code.
Office Hours
Pressure-test the idea before a plan exists. Sharp questions on evidence, user pain, and existing workarounds, so you ship the right thing or kill it early.
CEO Review
Strategy and scope. Premises get challenged, alternatives get weighed, and the 6-month regret scenario gets surfaced before a single line of code is touched.
Engineer Review
Architecture, edge cases, and tests. Every new codepath maps to coverage, every failure mode lands in a registry, and hidden complexity gets named.
Design Review
Information hierarchy, missing states, and the user journey. UX gaps get caught here, not in the implementer's head at 2am.
Developer Experience
The view from the next engineer who touches this. New APIs, configs, and workflows have to feel obvious before the plan ships.
Why hosted
Everything gstack does. Nothing to set up.
Cloud-native execution
No local Claude Code setup, no API keys to manage, no compute constraints. Agents run in isolated cloud environments on your real codebase.
Built for teams
gstack locally is single-player. On Lightsprint, your whole team sees every phase, reviews plans together, and ships from one shared workspace.
Live preview for every change
Every build phase gets its own live URL. Click through changes like a user before they touch production. QA phase tests it automatically.
Lightsprint is backed by Y Combinator and powers gstack for teams building in production.
Garry Tan shipped 10,000 lines of code and 100 pull requests per week over 50 days using gstack. Now your team can run the same workflow, together, in the cloud.
Your team's gstack is ready.
Connect your repo. Run Think, Plan, Build, Review, QA, Ship. Collaborate with your team at every step. Start free. No credit card, no local setup.