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GStack
GStack

GStack

Turn Claude Code into a Virtual Software Development Team

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GStack is an open-source skill pack for Claude Code created by Y Combinator CEO Garry Tan. It transforms a single AI assistant into a team of specialists — from CEO-level product review to automated QA testing and one-command shipping.

Most AI coding assistants are used like a universal intern: one context, many tasks, vague instructions.

We’ve been experimenting with a different idea: what if the model worked better when given explicit roles and workflows instead of staying in one generic mode?

That led to GStack, an open-source layer for Claude Code that turns one assistant into a virtual software development team. It includes nine role-based skills for product thinking, architecture, code review, shipping, browser-based QA, and retrospectives.

The main bet is that software work has distinct modes, and collapsing them into one assistant context hurts quality. So instead of “help me with everything,” GStack lets you invoke a specific mode for the stage you’re in.

Curious whether others building with Claude Code / coding agents have found the same thing.

Pricing
Free
Category
Productivity
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