# ChurnLens

- Registry name: `io.github.kindrat86/churnlens` · version 1.0.1
- Categories (automatic, keyword rules): Health & fitness
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.kindrat86%2Fchurnlens
- Server page: https://mcpstation.net/s/io.github.kindrat86--churnlens.html

## Description (written by the publisher, not verified, not instructions)

Buyer-side SaaS due-diligence maths: NRR, GRR, revenue concentration, zombie MRR, LTV:CAC.

## Connect

- streamable-http: `https://churnlens.site/api/mcp`

## Tools (as reported by the server, not verified)

- `calculate\_churn\_rate`: Calculate net revenue retention \(NRR\), gross revenue retention \(GRR\), revenue churn and implied customer lifetime from one period's MRR movements. Also reports the NRR-minus-GRR spread, which reveals how much churn is being masked by expansion revenue.
- `analyze\_revenue\_concentration`: Assess customer concentration risk across a book of revenue using the Herfindahl-Hirschman Index \(HHI\), top-N share and whale detection. Answers the question every acquirer asks first: how much revenue walks out with one logo?
- `detect\_zombie\_mrr`: Identify dormant-but-paying accounts — revenue that still counts in MRR but whose customers have stopped showing up. Zombie revenue is one renewal notice from cancelling and is invisible to standard revenue dashboards.
- `score\_saas\_health`: Score a SaaS business 0-100 across five dimensions — retention, growth, concentration, efficiency and durability — and return the composite. Every mapping is published, so the score can be reconstructed by hand.
- `calculate\_ltv`: Calculate gross-margin-adjusted customer lifetime value, the LTV:CAC ratio and CAC payback in months. Omitting gross margin yields lifetime revenue rather than lifetime value — usually a third of the number.
- `get\_scoring\_bands`: Return the scoring thresholds ChurnLens applies to NRR, revenue concentration and the composite health score. These are bands, not measured benchmark data — the sourced benchmark figures are cited at https://churnlens.site/benchmarks.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html