You're in.
Here is the whole setup.
Three steps. The first two take about two minutes. The third is the part that matters, and you can start it whenever you have the time.
Add it to Claude
Open the Claude desktop app on your computer. In the sidebar, click Customize, then Plugins, then Add marketplace. Paste this in:
CreativeAuthority/voice-foundation
Voice Foundation will appear in the list. Click Install. Nothing downloads and there is no file to find.
Start the interview
Open a new chat in Claude and say:
It starts asking immediately. Two conversations, thirty to forty-five minutes each. It asks one question at a time and it will push when an answer sounds too clean, which is the point. Stop whenever you want and pick it up later.
Answer with real specifics. Actual clients, actual moments, actual words you said. Polished answers produce polished nothing.
Use it, forever
When the interview is done you will have your foundation document and your branded PDF. From then on, in any chat:
Give it an address, a situation, or a piece you are working on. It reads your foundation, asks you the one thing only you know, drafts it, and checks its own work against your list of AI tells before you see it. You can also pick Voice Foundation straight from the skills menu.
Four things, and then email me.
Nothing happens when I say it
Check that the plugin installed under Customize, then Plugins. If it is there, start a brand new chat rather than continuing an old one, and say it again.
I do not see Add marketplace
You are probably in Claude in a browser tab. This needs the desktop app, on a Mac or a PC. Same account, same login, different window.
It says it cannot save my foundation
That means no folder is connected, and it is not a problem. Finish the interview anyway. At the end it hands you the whole document and a prompt you can paste anywhere. If you want it to save automatically instead, click Add folder in the desktop app and point it at any folder you like, then tell it to save.
The PDF did not come out as a PDF
You will get a branded web page version instead, which opens in your browser. Press Command-P, or Control-P on a PC, and choose Save as PDF. Same document.
Still stuck
Email [email protected] and tell me which step you are on and what you see on screen. I answer these myself.
Your answers are yours
The foundation is a document on your own computer. It is not uploaded anywhere, I never see it, and you can open it and change any line that does not sound like you. Doing that is not breaking it. That is how it gets sharper.
The prompt goes anywhere
Your PDF ends with a portable operating prompt. Paste it into a Claude project, into ChatGPT, into whatever you use next, and your voice carries. It is not locked to this plugin or to Claude.
Authorship is the competitive advantage.