SKILL.md
SaaS Metrics Skill
Investors and boards judge a SaaS business on a standard metric set — and getting the definitions right matters as much as the numbers. This skill computes MRR/ARR, growth, net and gross revenue retention, churn, the quick ratio, and the magic number from your movement data, each with its benchmark and a plain read — so a board update or investor snapshot is correct and defensible.
Required Inputs
Ask for these only if they aren't already provided:
- Starting MRR and the month's movement: new, expansion, contraction, churned MRR.
- Customer counts (start, churned) if you want logo churn too.
- S&M spend (prior period) if you want the magic number.
- Or just paste what you have — the skill computes what the inputs allow and flags the rest.
Output Format
SaaS Metrics: [company], [period]
A computed dashboard (use the helper script):
| Metric | Value | Benchmark | Read |
|---|---|---|---|
| MRR / ARR | |||
| MRR growth % | |||
| Net Revenue Retention | ≥ 100% (great ≥ 110%) | ||
| Gross Revenue Retention | ≥ 90% | ||
| Revenue churn % | |||
| Quick ratio ((new+exp)/(churn+contr)) | ≥ 4 strong | ||
| Magic number (if S&M given) | ≥ 0.75 efficient |
What it says — 2–3 lines: the health story the numbers tell, and the one metric to fix first.
Definitions used — state each formula explicitly (NRR excludes new customers; GRR caps at 100%), so the numbers are comparable and audit-proof.