Your Brand Sounds Like Three Different People. Here's How to Fix That.
What Happens When You Let AI Extract Your Brand Voice From Your Own Writing
What You’ll Get
10 copy-paste prompts that build a complete brand voice system from scratch
A voice extraction method that starts with content you’ve already written, not abstract ideals
A reusable Brand Voice Brief you can drop into any future prompt, or hand to any writer
Channel-specific adaptations for email, Twitter/X, LinkedIn and website copy
A monthly drift audit prompt to catch inconsistency before your audience does
A ready-to-use Brand Voice Master Template
Advanced tips on running voice briefs across different AI tools and teams
Your brand says one thing on your website, something slightly different in your emails, and something else entirely on social. It’s not intentional. It just happens. You wrote the website copy in one headspace, your VA wrote the emails, and you fired off tweets whenever you had five minutes.
Readers notice. They can’t always name it, but they feel it. The brand feels a bit slippery. Hard to pin down. And that erodes trust faster than bad design ever could.
These 10 prompts fix that. They give you a repeatable system for capturing your voice once, then applying it everywhere, without briefing every person who touches your content or rewriting everything from scratch.
First, capture the voice you already have
Most people try to define their brand voice as an abstract exercise. “We’re professional but approachable.” That tells Claude almost nothing useful. The prompts below start somewhere more concrete: your existing content.
Prompt #1: The Voice Extraction Prompt
What it does: Pulls the defining characteristics of your brand voice from content you’ve already written, so you have something real to work with.
When to use it: At the very start, before anything else. This is your foundation.
The Prompt:
Here are [NUMBER] samples of content I've written for my brand. Read them carefully, then identify:
1. The 5 most consistent vocabulary patterns (words I use often, words I never use)
2. My typical sentence length and rhythm
3. The emotional tone (e.g. direct, warm, a bit blunt, self-deprecating)
4. Any recurring structural habits (do I use questions? Short punchy sentences? Long explanations?)
5. What a reader probably feels after reading this content
Content samples:
[PASTE 3-5 PIECES OF YOUR OWN WRITING HERE]
Don't generalise. Point to specific examples from the text to support each observation.
How to use it:
Pull 3-5 pieces you’re proud of, from different channels if possible
Paste them in and run the prompt
Save the output, it becomes your informal voice brief
Example input: Three newsletter issues, a LinkedIn post you liked, and your About page.
What you’ll get: A detailed breakdown of your actual voice, not an idealised version. Things you didn’t consciously notice about how you write.
Pro tip: Run this on your best-performing content specifically. You want to extract the voice behind what works, not just what you’ve published.
Prompt #2: The Voice Brief Builder
What it does: Turns the extraction output into a structured one-page brief you can drop into any future prompt.
When to use it: Right after Prompt #1. You’ll use this brief in almost every prompt that follows.
The Prompt:
Based on this voice analysis, write me a brand voice brief I can paste into future AI prompts.
It should include:
- A 2-sentence summary of the overall voice
- 5 "we do this" writing rules (specific, not vague)
- 5 "we don't do this" rules
- 3 example phrases that sound like me
- 3 example phrases that don't sound like me at all
Voice analysis to work from:
[PASTE OUTPUT FROM PROMPT #1]
Keep it under 300 words. Make it practical, not theoretical.
How to use it:
Paste in your Prompt #1 output
Review the brief and edit anything that feels off
Save it somewhere you can copy quickly, a notes app or doc works fine
Example input: The voice analysis from Prompt #1 for a no-fluff B2B newsletter.
What you’ll get: A tight, copy-paste ready brief. Something like: “We write in plain English. Short sentences. We don’t explain why things matter, we just show it. We never say ‘leverage’ or ‘innovative.’ We don’t use bullet points as a crutch.”
Pro tip: Add a line about what your audience does NOT want to hear. That negative constraint often shapes voice more than the positive rules do.
Prompt #3: The Tone Calibration Prompt
What it does: Adjusts the same message for different emotional contexts while keeping your voice consistent underneath.
When to use it: When you need to write something that requires a different register, a difficult email, a sales page, a celebration post, without sounding like a different brand.
The Prompt:
I need to write a [CONTENT TYPE] for [SPECIFIC SITUATION/AUDIENCE].
The emotional register for this piece should be [CHOOSE: warm and encouraging / direct and urgent / matter-of-fact / celebratory / empathetic].
Here is my brand voice brief:
[PASTE VOICE BRIEF FROM PROMPT #2]
Write a draft of [50-150 words] that hits the right emotional tone while still sounding like me.
Then, in one sentence, explain what you adjusted and what you kept the same.
How to use it:
Decide the emotional register before you write, not after
Be specific about the situation so Claude can match context
Check the explanation at the end, it tells you whether the calibration actually landed
Example input: “I need to write a subscriber re-engagement email. The emotional register should be warm and a little self-aware. Here is my brand voice brief: [brief].”
What you’ll get: A draft that feels like you wrote it on a good day, in the right mood for the situation.
Pro tip: If the draft feels slightly off, tell Claude which rule from your brief it broke. It’ll recalibrate much faster than if you just say “make it sound more like me.”
You’ve got 3 prompts that do something most brand voice guides skip entirely: they start from what you’ve already written, not some idealised version of who you want to sound like.
But writing one piece at a time isn’t the problem. The problem is keeping every channel, tweets, email sequences, website copy, sales pages, sounding like the same person wrote them.
The next 7 prompts handle exactly that:
A prompt for adapting your voice to Twitter/X without sounding like a parody of yourself
Email sequences that feel consistent across every touchpoint, welcome series through win-back
Website copy that holds your voice under commercial pressure (sales pages are where brand voice goes to die)
A channel consistency audit so you can catch drift before your audience does
Plus: a ready-to-use Brand Voice Master Template