Garry Tan Open-Sources GBrain to Personalize Codex and Claude Code Agents

Y Combinator President Garry Tan has open-sourced GBrain, a personalized agent brain with 70 verified skills that generates custom agents for Codex and Claude Code by answering 12 questions. It is free to use alongside existing subscriptions, requiring only a new directory and a screenshot to create an agent repository.

2026-08-18 ~ 2026-08-18 · 3 related posts

• GBrain Generates Personalized Codex/Claude Code Agents With 12 Questions — garrytan · 2026-08-18
• GBrain Hands-On: Paste One Image into Claude Code/Codex to Bootstrap Your Agent Repo — garrytan · 2026-08-18
• Garry Tan open sources GBrain with 70 proven agent skills — garrytan · 2026-08-18