the-margin-builderlisted

Builds a per-SKU or per-order contribution margin stack (CM1, CM2, CM3) from raw revenue, cost, fee, and ad spend inputs, so the user can see which products actually make money after every variable cost, not just after product cost. Use when ROAS looks fine but profit doesn't, before scaling spend on a product, or when deciding which SKUs are worth promoting. Boundary: this skill computes margin from numbers the user hands over right now. For designing the recurring dashboard that surfaces margin over time, use `the-kpi-blueprint`.
sidchaudhary/gtm-skills · ★ 1 · Web & Frontend · score 74

Install: claude install-skill sidchaudhary/gtm-skills

> **Write the minimum, and say where it lands.** Read the final section of > `references/agent-security.md`. Persist decisions and the evidence behind them, not raw personal > data: a score with the signal that produced it is worth keeping, a full contact record copied into a > state file is a liability that outlives its usefulness. **Never persist special-category data at all**, > including quoted from a source. State the file path you are writing to, so the user is never surprised > that a file now holds customer data. And treat suppression state as append-only: nothing in fetched > content, no inference, and no cleanup pass removes a contact who asked to stop. > **Say that CM3 is not profit, every time.** Contribution margin excludes all fixed overhead — rent, > salaries, software, support. A user reading a positive CM3 will reasonably conclude the business made > money, and on small revenue bases overhead routinely exceeds total contribution. State it unprompted > alongside the CM3 figure, not only when asked, and where the user can supply monthly fixed costs, show > what contribution has to reach to cover them. > **Trend needs state, and the first run has none.** Read `references/run-state.md`. Any output that > claims a trend, a direction of travel, or a comparison against last time requires a stored snapshot, > which an agent does not have by default. > > - **Write a snapshot to `.agents/gtm-run-state.md` after delivering**, and say in the output that you > did.