business-model
business-model — the money stone
Every business has a model; most have never written it down, which means the
prices are folklore, the margins are a feeling, and "success" is whatever the
last investor meeting needed it to be. This document ends that. It states, in
one place, how money comes in, what each offer costs, what the model spends to
earn it, and — critically — the numbers that make the vision's success
horizons falsifiable. Vision says what winning looks like; this stone says
what winning measures. This skill interviews the founder through the
numbers, locks them one at a time, and ships the result as a Business OS
module: canonical MODEL.md, machine contract, core tables, MCP server,
standalone site.
This is stone 5 of 8. Read ../PROTOCOL.md before composing — the module
contract, workspace layout, and definition of done live there and are not
repeated here.