AI Writing Guide by Mariah Brunner

Make Claude Sound
Exactly Like You

Two ways to fix it. One takes 2 minutes. One takes 15. Both actually work.

Your coworkers can tell when you used AI. The phrases give it away every time. "Let's dive in." "In today's fast-paced world." "It's worth noting." That's not how you talk. Claude's default voice isn't your voice. These two fixes change that.

01
Free · Works Right Now
Claude Styles
(Built-In Feature)

Claude has a built-in feature called Styles. You paste in a few things you've actually written and it learns how you sound. Every response after that comes out in your voice. It saves permanently, so you only have to do this once.

1
Go to claude.ai and open a new chat.
2
In the chat box, click the "Choose Style" dropdown (bottom left, next to the model name).
3
Select "Create & Edit Styles" → then click "Create Custom Style."
4
Click "Add Writing Sample" and paste in 5 things you've actually written. Mix it up: a casual text or DM, a work email, a caption, something you wrote when you were excited, something more buttoned-up.
5
Hit "Create Style," give it a name, and click "Use Style." Done.

Tip: You can also click "Describe Style" if you'd rather type out how you write instead of pasting samples.

Claude looks at your word choices, sentence length, punctuation habits and tone. Not just what you write, but how you write it. The more varied your samples, the better the match. This style saves permanently and kicks in automatically for every chat going forward.

Works on: claude.ai free & paid plans · No extra tools needed

02
Advanced · Claude Code
Voiceprint Plugin

Built by James Kemp, a product manager at WooCommerce. Voiceprint is a free, open-source plugin for Claude Code. It does a real stylometric analysis of how you write: sentence length patterns, function word frequencies, punctuation habits. The stuff that actually makes your writing sound like you, not like a press release. It also has a phrase-banning step where you can block every AI cliche you hate. The output is a portable voice profile that travels with you across sessions.

You'll need 5 writing samples across these moods:

Casual
Explanatory
Excited
Frustrated
Persuasive
1
Install Claude Code if you haven't yet. It's a free command-line tool from Anthropic. Download it at claude.ai/code and follow the setup steps.
2
Add the plugin marketplace. In your terminal, run:
/plugin marketplace add jamesckemp/claude-plugins
3
Install Voiceprint. Run:
/plugin install voiceprint@jamesckemp/claude-plugins
4
Run the setup. Type /voiceprint in Claude Code and follow the prompts. It'll ask for your 5 writing samples one at a time.
5
Ban your least favorite AI phrases. The plugin walks you through building an avoid list. Things like "let's dive in" or "it's worth noting" or whatever specific phrases make you want to throw your laptop.
6
The whole process takes ~15 minutes. You'll get a portable voice profile that works across Claude Code sessions going forward.

GitHub: github.com/jamesckemp/claude-plugins/tree/master/voiceprint · Open source and completely free.

Use Styles if…

  • ✓ You just want it done today
  • ✓ You don't want to install anything
  • ✓ You use claude.ai in your browser
  • ✓ You're on the free plan

Use Voiceprint if…

  • ✓ You want the deepest voice match
  • ✓ You're already using Claude Code
  • ✓ You want a custom "ban" phrase list
  • ✓ You're comfortable in a terminal

They solve the same problem. Do one or both.

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Mariah Brunner · AI Tips for Real People @itsmariahbrunner on TikTok & Instagram