Keep pulling the thread on Garry Tan.
Garry Tan asserts that the software industry has entered a new "agent era."
Within three weeks of its creation, Garry Tan's GStack project surpassed the number of GitHub stars of the Ruby on Rails framework.
The original version of the startup Posturus required two years, $10 million in funding, and a team of 10 engineers to build.
Garry Tan created a command-line interface for G-Stack that wraps Playwright and Chromium to enable AI agents to perform automated QA in a browser.
Garry Tan co-founded the microblogging platform Posturus, which was later acquired by Twitter.
Garry Tan was inspired to start using Claude Code after hearing Andre Karpathy and Boris Cherny state they no longer write code manually.
Garry Tan believes the primary bottleneck in using AI models for coding is not their intelligence, but rather providing them with the correct setup and context.
G-Stack is an open-source repository that turns Claude Code into a simulated AI engineering team.
The "Office Hours" skill in G-Stack is modeled on the process Y Combinator partners use with startups and asks six initial questions to reframe a product idea.
Garry Tan characterizes the default Claude model (Opus 4.6) as an "ADHD CEO" for idea generation and OpenAI's Codex as an "autistic CTO" for detail-oriented tasks.
Garry Tan finds that when using the G-Stack "Office Hours" feature for idea validation, he decides an idea is not worth pursuing in approximately one out of every three sessions.
In a demonstration, G-Stack's adversarial review feature automatically identified and fixed 16 issues in a design document, improving its quality score from 6/10 to 8/10.