Free build kit
The Model-Proof Stack
Watch us build a voice skill and swap AI models under it, then build your own in about 10 minutes. One small file you own that makes any model write at your quality, plus the map of the five layers that survive every model change.
A skill you own, built on your voice
Not our rules, yours. One prompt reads 3 to 5 samples of your real writing and returns your write-like-me.md: short, checkable rules any model can follow.
The proof, run by you
The same swap test from our build, on your own writing. Two models, one voice, and you score it against your own rules. That is the moment the model stops mattering.
The map for everything above the model
The five-layer Model-Proof Stack on one printable map, with the first step for each layer, so you know exactly what to own next.
What's inside
- The worked example: our real build, three samples in, one skill out, two models writing in the same voice
- The Voice Extractor prompt, copy-paste ready, that turns your samples into your write-like-me.md
- Step by step with screenshots: get Claude, run the extractor, save the skill, run your swap test
- Two swap-test lanes: switch models inside Claude, or prove it across tools you already have
- The Model-Proof Stack map: five layers, you own four, the model is a socket
- The safe-swap checklist for the day a model gets deprecated, rate-limited, or repriced
Questions
Do I need to be technical?
No. If you can paste text into Claude, you can build this. The whole artifact is one page of markdown that a prompt writes for you.
Do I have to pay for anything?
No. A free Claude account builds the skill, and the swap test has a lane that uses tools you already have. A paid plan just lets you swap models inside Claude itself.
Does this only work with Claude?
The guide is written for Claude, but the skill is plain markdown and pastes into any AI tool that accepts text. Proving that is literally step 5.
Is this really free?
Yes. Drop your email and it is yours, and a copy lands in your inbox so you keep it.