The original title is "CLAUDE.md Is Not a Prompt File. It Is an Operating Boundary."

Short summary

The article argues CLAUDE.md should be treated as an operating boundary, not a motivational prompt. It should define what the repository does, what the AI can touch without asking, what requires confirmation, what must never be automated, and what 'done' means. Generic engineering virtues belong elsewhere — only rules that break things, recurring decisions, and project-specific terms should survive in the file. Deleting stale instructions is part of maintenance.

• •CLAUDE.md should function as an onboarding sheet for the work environment, not a motivational note to the model
• •Three key buckets: project purpose, boundaries (what to touch, what to confirm, what never to automate), and definition of done
• •Keep only rules that break something if violated, recurring decisions, and project-specific terms — delete everything else

Generated with AI, which can make mistakes.