One Open Source Project a Day (No. 72): Andrej Karpathy Skills — Fix Four Chronic LLM Coding Problems With a Single CLAUDE.md

Introduction

"LLMs excel at looping until they meet specific goals — so provide success criteria rather than imperative instructions."

This is the NO.72 article in the "One Open Source Project a Day" series. Today we are exploring andrej-karpathy-skills.

This project is unusual: its core is not a tool, framework, or library — it is a single CLAUDE.md file.

The story starts with Andrej Karpathy posting on X after heavy Claude Code usage, documenting failure patterns he observed in LLM coding: diving into implementation without clarification, engineering simple problems into complex solutions, making unrequested changes to adjacent code.