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Marketing & Content

Brand Voice Consistency Checker

Scores every draft against your brand-voice guide before it goes out.

Saves about ~1 hr per week

What it does

  • Ingests your brand-voice document once
  • Scores drafts against it: tone, forbidden phrases, personality
  • Returns a pass/fail with a rewritten option
  • Keeps your team consistent without a content manager's manual pass

How it works

  1. Voice guide loaded into the system
  2. Draft pasted or pulled from your queue
  3. AI scores against the guide and flags issues
  4. Rewritten version offered when needed

What's included

  • Voice guide setup
  • Scoring prompt
  • Recheck integration

Set it up yourself

Follow these 4 steps in order. You will need accounts for: Claude.

Step 1: Write your voice guide

  1. Write a short voice doc: tone words (e.g. 'direct, warm, no jargon'), do's, don'ts, forbidden phrases, and 3 example passages.
  2. Include your audience descriptors so the checker scores fit-for-reader too.
  3. Keep it under ~1 page; voice guides over 300 words get ignored.
  4. Save the doc and note its ID/path.
  5. Review it quarterly — voice drifts as your brand grows.

Watch out: Examples are worth more than adjectives — the checker matches style, and models judge by examples.

Step 2: Add the scoring prompt

  1. Build: 'Score this draft against my brand voice guide. Return JSON: {voiceScore 0-100, toneIssues[], forbiddenPhrasesHit[], audienceFitIssue?, verdict(pass/rewrite)}.'
  2. Calibrate: pass ≥ 80.
  3. Paste the voice guide inline in the prompt (or reference your doc).
  4. Paste with API key into the workflow.
  5. Test on a good and a bad draft and eyeball the scores.

Watch out: Fix the calibration on real drafts first — a checker that rubber-stamps everything is worse than none.

Step 3: Connect your drafts

  1. Feed drafts from where they're written: Notion draft database, Docs folder, or a paste-in web form.
  2. For each new draft, run the checker automatically.
  3. Write the score + verdict back to the draft's row/page.
  4. For 'rewrite' verdicts, generate one suggested revision for review.
  5. Test end-to-end with a draft.

Watch out: Always keep human approve-in-loop — the checker decides when you look, not what ships.

Step 4: Set the pass threshold

  1. Start with a strict threshold (85) and relax after a month of noise.
  2. Post a weekly summary: average score, most-flagged forbidden phrases, team outliers.
  3. Use the flagged phrases to update the shared style guide (the guide improves the checker).
  4. Review the weekly summary in your team sync.
  5. Iterate the guide quarterly with the checker's output.

Watch out: The summary is feedback for writers — share it kindly; the goal is fewer rewrites, not more policing.

Frequently asked questions

What does the Brand Voice Consistency Checker automation do?

Scores every draft against your brand-voice guide before it goes out. Ingests your brand-voice document once

How much time does Brand Voice Consistency Checker save?

It is estimated to save ~1 hr per week. Actual savings depend on your volume.

Which tools does Brand Voice Consistency Checker use?

It works with Claude.

What does Brand Voice Consistency Checker include?

Voice guide setup, Scoring prompt, Recheck integration.

Can I set up Brand Voice Consistency Checker myself?

Yes. The do-it-yourself guide on this page walks through 4 steps, from getting access to testing the finished automation.