Apr 19, 2026

gemstack

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gemstack

What you're missing

You have a Gemini Pro or Ultra account, but find the speed of your coding outpaces the speed of your AI agent. You need something to keep up with you, and you want to ensure your code is high quality and thoroughly tested.

Why you need this

Gemstack is an opinionated CLI tool to help you build high quality software quickly.

It is designed to be used with Antigravity or the Antigravity CLI, and is meant to help break down your AI Agent assisted development into concrete, ordered, and actionable steps that ensure quality at every step of the way.

How do I get this?

Prerequisites: Python 3.11+ and the Antigravity CLI (agy).

Install

bash

1# Recommended: pipx for isolated install
2pipx install "gemstack[all]"
3
4# Or via uv (fastest)
5uv tool install "gemstack[all]"

The [all] extra includes AI integrations, MCP server support, and the TUI dashboard.

First run

Gemstack enforces a 5-step lifecycle: Spec → Trap → Build → Audit → Ship, driven by XML-structured expert roles that orchestrate Antigravity subagents. Check the Getting Started guide to wire it into your first project.