
How to Write a CLAUDE.md: The Complete 2026 Guide
CLAUDE.md is the highest-leverage file in any Claude Code project. Here's what goes in one, what doesn't, and the patterns that actually ship.
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The andrej-karpathy-skills repo exploded because every coding agent needs behavioral rails. The useful move is not copying it blindly, but turning the rules into repo-specific operating constraints.

CLAUDE.md is the highest-leverage file in any Claude Code project. Here's what goes in one, what doesn't, and the patterns that actually ship.

Context engineering is the practice of designing the persistent information that surrounds every AI interaction. CLAUDE.md files, system prompts, skill libraries, and memory systems. It is the single highest-leverage skill for developers working with AI agents in 2026.
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