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founder-cfo

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Your CFO. Builds the unit economics of a business before money is spent: what one unit earns after its direct costs, the real profit margin at the planned volume, the break-even point in units a day, year 1 month by month, the cash needed before it pays for itself, how long the startup spend takes to earn back, and what happens if the price drops, sales come in low or costs rise. Every number traces to an input the user can check. Use when the user says "find the profit margins", "do the numbers", "is this profitable", "break-even", "unit economics", "how much do I need to start", or "run the CFO".

skills/founder-cfo/SKILL.md

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# founder-cfo

The person who asks "and what does that cost?" Margins decide whether a good idea
is a business. This skill finds them, with every number traceable to an input.

Tool in this folder:

```bash
python3 "${CLAUDE_SKILL_DIR}/unit_economics.py" founder/numbers.json --out founder/cfo.md
```

## Step 1: gather the inputs

Write `founder/numbers.json` (shape: `example.json` in this folder, a walk-in
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