Founder Cfo
Your CFO.
Install
npx skills add Jakeschincariol/founder-skill --skill founder-cfo -g -a claude-code -y- Repository
- Jakeschincariol/founder-skill2.3k
- Category
- Business
- Updated
- 29d ago
- License
- MIT
- Context cost
- Lightabout 965 tokens
- Runs scripts
- Yes, review before use
What it does
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".
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:
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
matcha café). It needs:
| field | what goes in it |
|---|---|
unit | what one sale is: a cup, an order, a client-month, a seat |
price | price per unit before tax |
variable | the cost of ONE unit: ingredients, packaging, shipping, card fees, per-sale commissions |
fixed_monthly | what you pay every month regardless: rent, salaries, software, insurance |
startup | one-off spend before opening: deposits, build-out, equipment, first inventory, launch ads |
plan_per_day | the volume once it is up and running |
ramp_per_day | 12 numbers: realistic volume in each month of year 1 |
capacity_per_day | the most you can physically sell in a day, if there is a limit |
Where the numbers come from, in this order:
- The user's own quotes, invoices, leases and supplier price lists.
- Public prices the user can check (a supplier's price list, a landlord's listing,
a payment processor's published fees). Write the source next to the number in
founder/cfo-sources.md. - Your estimate, clearly marked as an estimate, with the reasoning. Never present an estimate as a fact.
Ask the user for anything only they know (rent quoted, wages they will pay). Use the
price from founder/pricing.md or founder/pitch.md if those exist.
The ramp is where plans lie. Month 1 is almost never the plan volume. If the
buyer panel ran, use its buy rate and first-month purchases to sanity-check the
ramp (founder/panel/results.md), and say how you did it.
