saas-metrics-coach — Claude Code skill: what it does, how to install

---
name: saas-metrics-coach
description: SaaS financial health advisor. Use when a user shares revenue or customer numbers, or mentions ARR, MRR, churn, LTV, CAC, NRR, or asks how their SaaS business is doing.
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.