gstackOpen-source workflow layer that adds planning, review, QA, and shipping skills to Claude Code and Codex.
Overview
Key features
- Structured planning skill
- Code review skill
- QA and testing workflows
- Shipping and release helpers
- Integration with Claude Code and Codex
- Open-source and extensible
Pricing
- Model
- Freemium
- Category
- Programming Assistants
- Rating
- 4.8 / 5 (5)
Use cases
Structured planning for AI coding tasks
Use the planning skill to break a feature request into clear steps before Claude Code or Codex starts writing code, reducing drift and rework.
Automated code review loop
Invoke the review skill on AI-generated diffs to catch issues early and enforce consistent engineering standards across pull requests.
QA and testing checkpoints
Run the QA workflow after changes to systematically validate behavior, helping teams ship AI-assisted code with more confidence.
Repeatable plan-to-ship pipeline
Chain planning, review, QA, and shipping skills into a standard development loop so teams move from prototype prompts to predictable releases.
Pros & Cons
Pros
- Adds structure to AI coding sessions
- Works with both Claude Code and Codex
- Open source and customizable
- Covers the full plan-to-ship loop
- Encourages repeatable engineering practices
Cons
- Requires learning its skill model
- Tied to specific AI coding agents
- Setup overhead for small projects
- Quality depends on underlying model
Battle record
Across 2 battles in the Pantheon.
Last 2 battles
Reviews
Average from 5 ratings.
Sign in to leave a review.
Use it every day
Honestly didn't expect to like it this much. Code review skill is exactly what I needed, and encourages repeatable engineering practices. I do wish setup overhead for small projects, but I reach for it almost every day now and it just clicks.
Years in this space
I've evaluated a lot of these over the years. What stands out here is qA and testing workflows — handled better than most — and adds structure to AI coding sessions. Quality depends on underlying model is my one real gripe. Worth the time if this is your use case.
Skeptical, then convinced
I went in skeptical — most tools in this space overpromise. It actually delivers on structured planning skill, and adds structure to AI coding sessions caught me off guard. Requires learning its skill model is why this isn't a perfect score, still, I'd recommend giving it a real trial.
Solid for our team
We rolled this out across the team last quarter and open source and customizable. Shipping and release helpers fits neatly into how we already work, and shipping and release helpers removed a step we used to do by hand. but it has held up under daily use.
Skeptical, then convinced
I went in skeptical — most tools in this space overpromise. It actually delivers on qA and testing workflows, and encourages repeatable engineering practices caught me off guard. Requires learning its skill model is why this isn't a perfect score, still, I'd recommend giving it a real trial.
Q&A
Is gstack worth the setup overhead for small projects or solo developers?
gstack adds structure and repeatability that shine on ongoing team projects, but it carries setup overhead and a learning curve for its skill model. For small or one-off projects, that investment may outweigh the benefits compared to ad-hoc prompting.
Asked by Joanna Kowalski · Mar 26, 2026
What is gstack?
gstack is Garry Tan's open-source workflow for Claude Code, Codex, and compatible agents. It packages specialist commands and power tools into one software delivery system.
Asked by Femi Adebayo · Mar 1, 2026
Who is gstack for?
It is built for founders, first-time agent users, and technical leads who want AI speed without lowering the bar on planning, review, QA, and release quality.
Asked by Diego Fernández · Jan 10, 2026
Which AI coding assistants does gstack integrate with?
gstack is built to extend Claude Code and Codex specifically, adding structured planning, review, QA, and shipping skills on top of them. It's tied to these agents, so teams using other AI coding tools won't get direct support out of the box.
Asked by Olga Ivanova · Jan 8, 2026
Why not just use a blank prompt?
Because raw speed is not the bottleneck. Trust is. gstack adds roles, order, review gates, QA, and release checks so each step inherits context from the one before it.
Asked by Lior Ben-David · Jan 1, 2026
Ask a question
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