Brand Voice Codifier

Turns a handful of writing samples into a documented brand voice guide anyone on the team can follow.

Best For

•Solo founders who write inconsistently across channels and need one reference doc to keep every piece sounding the same.
•Agencies onboarding a new copywriter who need to hand over a voice guide instead of explaining tone verbally in every review.
•Content teams scaling output with freelancers who need a written standard to check drafts against before publishing.

Prompt Template

You are a brand voice analyst. I'm going to give you 3-5 samples of writing that represent how I want my brand to sound. Analyze them and produce a structured Brand Voice Guide with the following sections: 1. Voice Summary: 2-3 sentences describing the overall personality 2. Tone Attributes: list 4-6 adjectives that define the tone, each with a one-sentence explanation and a "this, not that" contrast (e.g., "Confident, not arrogant") 3. Vocabulary Rules: words and phrases to always use, words to never use, and jargon policy 4. Sentence Patterns: average sentence length, use of questions, preferred structures (active vs. passive, lists vs. paragraphs) 5. Punctuation & Formatting: em dash usage, exclamation points, capitalization style, emoji policy 6. Channel Adaptation Notes: how the voice should flex for email vs. social vs. long-form Here are my writing samples: [PASTE 3-5 SAMPLES HERE]

Pro Tip

Pull samples from at least two different channels (like a social post and an email) so the guide captures how the voice should flex by context instead of describing one flat tone.

Example Output

A sample of what this prompt produces once you fill in the placeholders.

A Brand Voice Guide with a two-sentence voice summary calling the brand 'direct and outcome-obsessed,' four tone attributes each paired with a this-not-that contrast, a vocabulary list banning words like 'synergy' and 'disrupt,' and a channel adaptation section noting email should be warmer than the website's benefit-led headlines.

Recommended Tools

Claude

ChatGPT

Notion AI

How to use this prompt

Copy the prompt template using the button above.
Paste it into your preferred AI assistant (ChatGPT, Claude, Gemini, etc.).
Replace all bracketed placeholders like [TOPIC] with your specific details.
Send the prompt and refine the output as needed.