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Studio Schema

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Six lines for a per-project CLAUDE.md

Most project files are wishes. Every line in this one has to earn its place. As posted on TikTok, Instagram, and LinkedIn — the full story, one slide per card.

CLAUDE.md · SCHEMA 01101/08

Six lines Claude obeys beat six hundred it skims.

Most project files are wishes. Every line in this one has to earn its place.

The template02/08

Six slots, one job each.

  • 01Stack lock — what this is built with, and what it is not
  • 02Package manager — the one allowed install command
  • 03Test gate — what must pass before anything is called done
  • 04Style rule — the convention that protects the design system
  • 05Banned thing — the mistake you never want to see again
  • 06Tone rule — how the words should read
The real file03/08

The whole rulebook fits in one cat.

# studio-demo

- Stack: static HTML + CSS only. No frameworks,
  no build step, no JavaScript.
- Package manager: pnpm only - never npm install.
- Before claiming done: open index.html in a
  browser and check it renders.
- Styling: use the CSS variables in style.css.
- Banned: emojis anywhere in markup or copy.
- Tone: plain English, no marketing superlatives.
The deletion test04/08

If deleting a line changes nothing, it's noise.

Every line passes the same test: if I deleted it, would Claude's behavior change? Noise crowds out the lines that matter.

The A/B test05/08

Same question, two answers.

Myth

Without the file: "npm is as good a choice as any — it'll just create package-lock.json."

Fact

With the file: two rule violations cited before anything runs — the pnpm mandate and the no-JavaScript stack lock — plus the compliant path instead.

Why short wins06/08

Past 200 lines, adherence measurably drops.

These files are context, not configuration — Claude weighs them like a long brief. A 600-line file gets skimmed, and your critical rule sits in paragraph forty hoping to be noticed.

Save this07/08

Write it in five minutes.

  • CLAUDE.md at the project root, next to the code
  • Fill the six slots — concrete enough to verify
  • Trip a constraint on purpose and watch it fire
  • Secrets and runbooks stay out — the file ships with the repo
  • Every-time rules graduate to hooks; judgment stays here
The boundary08/08

One idea from one lesson.

Track 1 (23 lessons) is free.