March 17, 2026 — A public release of an artificial intelligence coding configuration by Y Combinator CEO Garry Tan has ignited a fierce debate within the software development community, drawing both significant praise and sharp criticism.
Viral Release and “Cyber Psychosis”
Tan introduced his Claude Code setup, which he calls “gstack,” on March 12. He shared it publicly on GitHub under an open-source MIT license. The project consists of a collection of specialized prompts, or “skills,” designed to make the AI coding assistant Claude function like a simulated engineering team.
The release followed candid remarks Tan made during an on-stage interview at SXSW. He told venture capitalist Bill Gurley that his excitement for working with AI agents has led to intense work habits. “I sleep like four hours a night right now,” Tan said. “I have cyber psychosis, but I think like a third of the CEOs that I know have it as well.”
He contrasted his current AI-driven productivity with past experiences building startups. “Once you try it, you’ll realize: it’s like I was able to recreate my startup that took $10 million in VC capital and 10 people, and I worked on that for two years,” Tan explained.
How Gstack Functions
The gstack configuration uses multiple AI “roles” to replicate a software development workflow. According to Tan’s documentation, one skill has Claude evaluate startup ideas as a CEO would. Another writes code from an engineer’s perspective. A third reviews that code for bugs and security vulnerabilities.
Additional skills handle design mockups and technical documentation. Tan has continued to expand the collection since its initial release. The GitHub repository currently lists 13 skills, though Tan has been actively posting about new additions on social media.
Initial reception was overwhelmingly positive. His announcement tweet went viral on X, and the project trended on Product Hunt. On GitHub, it quickly amassed nearly 20,000 stars and over 2,200 forks, indicating substantial developer interest and adaptation.
The Backlash Emerges
Controversy erupted after Tan shared a private testimonial on social media. He posted that a CTO friend described gstack as “god mode” after it discovered a subtle cross-site scripting vulnerability. The friend predicted that “over 90% of new repos from today forward will use gstack.”
This claim triggered immediate criticism from some developers and founders. One founder posted on X that “Garry should be embarrassed for tweeting this” and added that “if it’s true, that CTO should be fired immediately.”
Vlogger Mo Bitar produced an analysis titled “AI is making CEOs delusional,” arguing the project was essentially “a bunch of prompts” in a text file. A comment on Product Hunt suggested the attention was due solely to Tan’s position: “Garry, let’s be clear and honest: if you weren’t the CEO of YC, this wouldn’t be on PH.”
AI Systems Weigh In
When queried about the technical merit of gstack, several AI systems provided assessments. ChatGPT described it as a group of “reasonably sophisticated prompt workflows” but noted they’re not “magical.” It suggested the real insight was that “AI coding works best when you simulate an engineering org structure.”
Google’s Gemini called the setup “sophisticated,” characterizing it as essentially a “‘Pro’ configuration” focused more on correctness than ease. Claude itself praised gstack as “a mature, opinionated system built by someone who actually uses it heavily” and “one of the better examples of Claude Code skill design out there.”
Broader Implications for AI Development
The debate touches on fundamental questions about AI’s role in software creation. Proponents see tools like gstack as democratizing high-quality development practices. Skeptics question whether packaged prompts represent genuine innovation or merely repackage existing capabilities.
Tan’s continued enthusiasm was evident in a subsequent social media post. “I took modafinil just to stay awake longer to be able to turn the momentary crystalline structures I had in my brain into lines of code,” he wrote, referring to a wakefulness-promoting drug. “I love coding but I love coding with AI even more. I speak it listens and we create.”
The gstack repository remains available on GitHub. Tan has not responded to multiple requests for comment about the criticism. The project’s evolution and adoption will provide a real-world test of whether structured AI prompting represents a meaningful advance in developer tooling.
This article was produced with AI assistance and reviewed by our editorial team for accuracy and quality.
