Y Combinator’s CEO Shared His Claude Code Prompt. It Solves the Wrong Problem.

I was running the most sophisticated CLAUDE.md I’d ever seen - a structured review pipeline that forces Claude through architecture, code quality, tests, and performance checks before touching anything. On paper it was brilliant. In practice I’d given myself a part-time job as a QA engineer for a robot. So I ripped it out. TL;DR: There are 3 layers to controlling Claude Code: review (catching mistakes after), enforcement (blocking mistakes during), and intent (preventing mistakes before). Most devs - including YC’s CEO - are stuck on layer 1. The real gains live in layer 3.