Skills for Real Engineers. Straight from my .agents directory.
39 skills
founder-cfo
Agent skill from
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".
How to install founder-cfo
install founder-cfo
# install the founder-skill pack with the skills CLI
npx skills add Jakeschincariol/founder-skill# or add only this skill to Claude Code: copy the folder
skills/founder-cfo/
# into
~/.claude/skills/founder-cfo/ (all projects)
.claude/skills/founder-cfo/ (one project)
1# founder-cfo23The person who asks "and what does that cost?" Margins decide whether a good idea4is a business. This skill finds them, with every number traceable to an input.56Tool in this folder:78```bash9python3 "${CLAUDE_SKILL_DIR}/unit_economics.py" founder/numbers.json --out founder/cfo.md10```1112## Step 1: gather the inputs1314Write `founder/numbers.json` (shape: `example.json` in this folder, a walk-in15matcha café). It needs:1617| field | what goes in it |18| --- | --- |19| `unit` | what one sale is: a cup, an order, a client-month, a seat |20| `price` | price per unit before tax |21| `variable` | the cost of ONE unit: ingredients, packaging, shipping, card fees, per-sale commissions |22| `fixed_monthly` | what you pay every month regardless: rent, salaries, software, insurance |23| `startup` | one-off spend before opening: deposits, build-out, equipment, first inventory, launch ads |24| `plan_per_day` | the volume once it is up and running |25| `ramp_per_day` | 12 numbers: realistic volume in each month of year 1 |26| `capacity_per_day` | the most you can physically sell in a day, if there is a limit |2728Where the numbers come from, in this order:29301. The user's own quotes, invoices, leases and supplier price lists.312. Public prices the user can check (a supplier's price list, a landlord's listing,32 a payment processor's published fees). Write the source next to the number in33 `founder/cfo-sources.md`.34…
Excerpt shown under the repository's MIT license.
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