Auto-Update CLAUDE.md Every Time You Correct Claude

Every correction you make to Claude is a missed opportunity if you don't capture it permanently.

The pattern is simple: whenever Claude does something wrong and you correct it, follow up with "add a rule to CLAUDE.md so you never do this again." Claude will write the rule itself and apply it to all future sessions on that project.

# After correcting Claude Code:
"Add a rule to CLAUDE.md so you never make this mistake again."

This turns your corrections into institutional memory. Over time, your CLAUDE.md becomes a curated set of guardrails that reflect exactly how you like to work — your preferred error handling style, your naming conventions, when to ask vs. when to proceed, all of it.

A few rules worth seeding manually to get started:

# In CLAUDE.md
- Before writing any code, describe your approach and wait for approval.
- If a task touches more than 3 files, stop and break it into smaller steps first.
- After writing code, list what could break and suggest tests to cover it.
- When fixing a bug, write a failing test first, then fix until the test passes.

But the real power is that the file grows on its own. Every project ends up with a CLAUDE.md that is genuinely tailored — because you trained it, correction by correction.

Treat every mistake as a CLAUDE.md entry, and you'll make that mistake exactly once.

via @svpino