Stop getting generic AI content. This setup teaches Claude exactly how you write so every output actually sounds like you.
The number one complaint I hear from women founders who have tried AI for content is some version of: "It doesn't sound like me." And they're right. Out of the box, AI sounds like AI. Polished, neutral, a little corporate, slightly hollow. It doesn't have your edge, your warmth, your particular way of saying things. That's not a flaw in the tool. It's a setup problem.
This guide fixes that. In one afternoon, you'll build what I call a brand voice document, load it into Claude as a permanent instruction set, and test it until the output actually sounds like you wrote it. This is the first thing I install for every client. It's the foundation everything else runs on.
You don't need a writing background, a style guide, or any technical knowledge. You just need to know how you talk and be willing to write it down.
This whole setup takes about 90 minutes. Grab a coffee, close your other tabs, and give it one focused block of time. Here's what to have ready:
We're building this in five steps. By the end, you'll have a living brand voice document that lives inside Claude and automatically shapes every response it gives you.
Open a blank Google Doc or Notes app and answer these questions in plain, honest sentences. Don't overthink it. Write like you're explaining yourself to a smart friend who's going to be ghostwriting for you.
Cover these: How would you describe your tone in three words? What does your writing always do (use humor, ask questions, tell stories)? What does it never do (lecture, use corporate jargon, be vague)? Who are you writing for and what do they need to feel? What topics do you write about? What are some phrases or words you use often? What are phrases you hate and would never say?
Then paste in your 3 to 5 writing examples at the bottom, labeled clearly. This whole document will probably be 400 to 800 words. That's plenty.
In Claude, click "Projects" in the left sidebar and create a new project. Name it something like "Content Creation" or "My Business." Projects are Claude's way of giving you a persistent workspace where it remembers your instructions across every conversation.
If you're on the free tier and don't have Projects yet, you can still do this. You'll paste your voice document at the top of each new conversation instead. It's a bit more friction, but it works just as well.
Inside your new Project, find the "Project instructions" or "Custom instructions" section (it's usually a text box that appears before you start a conversation). Paste your full brand voice document here, starting with something like: "You are a content writing assistant for [Your Name]. Here is everything you need to know about how she writes and who she writes for:"
Then paste your full document. From this point forward, every conversation inside this Project will start with Claude already knowing your voice. You only do this setup once.
Start a new conversation inside your Project and give Claude a real writing task. Something you'd actually need this week: an Instagram caption, an email subject line, a short intro paragraph for a blog post. Whatever feels most "you."
Read the output carefully. Does it sound like you? Does it use your rhythm, your tone, your level of formality or warmth? If something is off, go back to your brand voice document and be more specific about that thing. If you never use exclamation points, say that. If you always write in first person, say that. The more specific you are, the better the output.
Do one round of refinement based on what you noticed in Step 04, update your Project instructions, and test again. You're not looking for perfection on the first pass. You're looking for "close enough that I just need to edit the edges."
Once you're happy with it, save a copy of your brand voice document somewhere you can find it (your desktop, a Notion page, a Google Doc). As your brand evolves, you'll update it. You've just built the foundation that everything else gets installed on top of.
You now have an AI that knows how you write. That might not sound dramatic, but it changes everything about how useful the tool is to you. Instead of spending 20 minutes editing AI content back into your voice, you spend 2 minutes polishing something that already sounds like you.
This brand voice document is the first thing I build for every client in IdentityOS. It's the layer that all the other content systems plug into. If you want to see what a fully installed version of that looks like, take a look at what's inside the Content Engine.
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