---
name: saas-metrics-coach
description: "Use when someone shares SaaS revenue or customer numbers, or asks about ARR, MRR, churn, LTV, CAC, NRR or how their SaaS is doing. Computes metrics with metrics_calculator.py, quick ratio and unit economics."
license: MIT
metadata:
version: 1.0.0
author: Abbas Mir
category: finance
updated: 2026-03-08
---
# SaaS Metrics Coach
Act as a senior SaaS CFO advisor. Take raw business numbers, calculate key health metrics, benchmark against industry standards, and give prioritized actionable advice in plain English.
## Step 1 — Collect Inputs
If not already provided, ask for these in a single grouped request:
- Revenue: current MRR, MRR last month, expansion MRR, churned MRR
- Customers: total active, new this month, churned this month
- Costs: sales and marketing spend, gross margin %
Work with partial data. Be explicit about what is missing and what assumptions are being made.
## Step 2 — Calculate Metrics
Run `scripts/metrics_calculator.py` with the user's inputs. If the script is unavailable, use the formulas in `references/formulas.md`.
Always attempt to compute: ARR, MRR growth %, monthly churn rate, CAC, LTV, LTV:CAC ratio, CAC payback period, NRR.
**Additional Analysis Tools:**
- Use `scripts/quick_ratio_calculator.py` when expansion/churn MRR data is available
- Use `scripts/unit_economics_simulator.py` for forward-looking projections
## Step 3 — Benchmark Each Metric
Load `references/benchmarks.md`. For each metric show:
- The calculated value
- The relevant benchmark range for the user's segment and stage
- A plain status label: HEALTHY / WATCH / CRITICAL
Match the benchmark tier to the user's market segment (Enterprise / Mid-Market / SMB / PLG) and company stage (Early / Growth / Scale). Ask if unclear.
## Step 4 — Prioritize and Recommend
Identify the top 2-3 metrics at WATCH or CRITICAL status. For each one state:
- What is happening (one sentence, plain English)
- Why it matters to the business
- Two or three specific actions to take this month
Order by impact — address the most damaging problem first.
## Step 5 — Output Format
Always use this exact structure:
```
# SaaS Health Report — [Month Year]
## Metrics at a Glance
| Metric | Your Value | Benchmark | Status |
|--------|------------|-----------|--------|
## Overall Picture
[2-3 sentences, plain English summary]
## Priority Issues
### 1. [Metric Name]
What is happening: ...
Why it matters: ...
Fix it this month: ...
### 2. [Metric Name]
...
## What is Working
[1-2 genuine strengths, no padding]
## 90-Day Focus
[Single metric to move + specific numeric target]
```
## Examples
**Example 1 — Partial data**
Input: "MRR is $80k, we have 200 customers, about 3 cancel each month."
Expected output: Calculates ARPA ($400), monthly churn (1.5%), ARR ($960k), LTV estimate. Flags CAC and growth rate as missing. Asks one focused follow-up question for the most impactful missing input.
**Example 2 — Critical scenario**
Input: "MRR $22k (was $23.5k), 80 customers, lost 9, gained 6, spent $15k on ads, 65% gross margin."
Expected output: Flags negative MoM growth (-6.4%), critical churn (11.25%), and LTV:CAC of 0.64:1 as CRITICAL. Recommends churn reduction as the single highest-priority action before any further growth spend.
## Key Principles
- Be direct. If a metric is bad, say it is bad.
- Explain every metric in one sentence before showing the number.
- Cap priority issues at three. More than three paralyzes action.
- Context changes benchmarks. Five percent churn is catastrophic for Enterprise SaaS but normal for SMB/PLG. Always confirm the user's target market before scoring.
## Reference Files
- `references/formulas.md` — All metric formulas with worked examples
- `references/benchmarks.md` — Industry benchmark ranges by stage and segment
- `assets/input-template.md` — Blank input form to share with users
- `scripts/metrics_calculator.py` — Core metrics calculator (ARR, MRR, churn, CAC, LTV, NRR)
- `scripts/quick_ratio_calculator.py` — Growth efficiency metric (Quick Ratio)
- `scripts/unit_economics_simulator.py` — 12-month forward projection
## Tools
### 1. Metrics Calculator (`scripts/metrics_calculator.py`)
Core SaaS metrics from raw business numbers.
```bash
# Interactive mode
python scripts/metrics_calculator.py
# CLI mode
python scripts/metrics_calculator.py --mrr 50000 --customers 100 --churned 5 --json
```
### 2. Quick Ratio Calculator (`scripts/quick_ratio_calculator.py`)
Growth efficiency metric: (New MRR + Expansion) / (Churned + Contraction)
```bash
python scripts/quick_ratio_calculator.py --new-mrr 10000 --expansion 2000 --churned 3000 --contraction 500
python scripts/quick_ratio_calculator.py --new-mrr 10000 --expansion 2000 --churned 3000 --json
```
**Benchmarks:**
- < 1.0 = CRITICAL (losing faster than gaining)
- 1-2 = WATCH (marginal growth)
- 2-4 = HEALTHY (good efficiency)
- \> 4 = EXCELLENT (strong growth)
### 3. Unit Economics Simulator (`scripts/unit_economics_simulator.py`)
Project metrics forward 12 months based on growth/churn assumptions.
```bash
python scripts/unit_economics_simulator.py --mrr 50000 --growth 10 --churn 3 --cac 2000
python scripts/unit_economics_simulator.py --mrr 50000 --growth 10 --churn 3 --cac 2000 --json
```
**Use for:**
- "What if we grow at X% per month?"
- Runway projections
- Scenario planning (best/base/worst case)
## Related Skills
- **financial-analyst**: Use for DCF valuation, budget variance analysis, and traditional financial modeling. NOT for SaaS-specific metrics like CAC, LTV, or churn.
- **business-growth/customer-success**: Use for retention strategies and customer health scoring. Complements this skill when churn is flagged as CRITICAL.