Garry Tan Releases gstack: An Open-Source Virtual Engineering Team for AI Coding Agents

Y Combinator President and CEO Garry Tan has released gstack, an open-source collection of tools designed to transform AI coding assistants—primarily Claude Code—into a structured virtual engineering team. Distributed under the MIT license, the project provides modular slash commands and automated workflows intended to handle tasks spanning product strategy, architecture design, code review, quality assurance, security auditing, and release management.

Overview of gstack

gstack is structured to mirror the stages of a standard software development sprint, aiming to guide users from initial concept through deployment. Rather than functioning as a generic chat assistant, the toolset uses defined roles to structure interactions between human developers and AI agents.

• Strategic Planning: Commands such as `/office-hours` and `/autoplan` are designed to gather product requirements, challenge initial framing, and generate structured design documentation.
• Review and Quality Assurance: Commands like `/review` and `/qa` aim to inspect staging environments, run browser-based checks, and identify production bugs that might bypass standard continuous integration checks.
• Deployment: The `/ship` workflow assists in executing tests, running code reviews, and preparing pull requests.

System Requirements and Installation

gstack operates across multiple operating systems, with varying levels of platform-specific integration:

• macOS: Full support is provided. When integrated with the Aside browser (macOS 15+), browser-based skills can use existing authenticated user sessions. Otherwise, setup configures a bundled Chromium instance.
• Linux: Fully supported using a bundled Chromium browser. Systems utilizing strict unprivileged user namespace restrictions (such as Ubuntu 24.04+ with AppArmor) may require an environment variable adjustment (`GSTACK_CHROMIUM_NO_SANDBOX=1`).
• Windows: Compatible via Git Bash or Windows Subsystem for Linux (WSL). Windows environments require both Bun and Node.js to be installed on the system PATH due to specific transport behaviors.

Installation Steps

Users can install gstack via a command-line setup process:

1. Clone the repository into the local Claude skills directory:

`git clone --single-branch --depth 1 https://github.com/garrytan/gstack.git ~/.claude/skills/gstack && cd ~/.claude/skills/gstack && ./setup`

2. Update the project's `CLAUDE.md` file to specify the use of gstack's browsing tools instead of default alternatives.

Verification and Troubleshooting

gstack includes a diagnostic utility, `gstack-doctor`, designed to check local installations, verify environment dependencies, and confirm component readiness without executing paid model calls or starting active workflows. Users encountering configuration warnings or setup errors can consult the official documentation index within the repository for specific remediation commands.