Apr 19
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Join AI Foundations: https://www.skool.com/ai-foundations Work with us: https://aifoundations.io/apply Our FREE Resources: https://aifoundations.io/resources 23 Claude skills from Y Combinator just dropped, and Gary Tan released the G-Stack V1 on April 18th 2026. This video walks through how to install G-Stack inside Claude Code, then applies it to a real SaaS product so you can see what each skill actually does. You'll see the Office Hours, Auto Plan, and Design Shotgun skills run end to end. G-Stack is built by Gary Tan, the current CEO of Y Combinator, the accelerator behind Airbnb, Coinbase, and Stripe. It ships 23 opinionated Claude skills that serve CEOs, designers, engineering managers, release managers, doc engineers, and QA. The repo has 76,000 stars on GitHub. The skills cover strategy and planning, design, quality and debugging, shipping and release safety rails, browser and external tools, session and meta checkpoints, and self-upgrading G-Stack itself. Tan claims it can replace your entire software engineering team. Here's Gstack: https://github.com/garrytan/gstack Chapters 0:00 23 Claude Skills From Y Combinator 0:15 Why Y Combinator Built G-Stack 0:31 G-Stack V1 Launches April 2026 1:02 Installing G-Stack In Claude Code 1:36 Applying G-Stack To A Real SaaS Product 2:13 G-Stack Office Hours Skill Walkthrough 3:05 G-Stack Auto Plan: Four Expert Reviews 3:56 Adding Claude's Question Tool To G-Stack 4:26 G-Stack Design Shotgun Skill Demo 5:25 Closing Thoughts #ycombinator #ClaudeSkills #ClaudeCode