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lean-analytics

Choose and audit startup metrics using Croll and Yoskovitz's "Lean Analytics". Use when the user mentions "what metrics should we track", "KPIs", "north star metric", "One Metric That Matters (OMTM)", "vanity metrics", "analytics dashboard", "DAU/MAU", "churn benchmark", or "measure product-market fit". Also trigger when choosing metrics for a startup or feature, auditing a dashboard for vanity metrics, setting metric targets and baselines, or instrumenting a product by business model and stage.

1,974stars197forksUpdated 8/20/2026

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About lean-analytics

Lean Analytics is a framework skill for choosing and auditing startup metrics, distilled from Alistair Croll and Benjamin Yoskovitz's Lean Analytics. It solves the problem of teams drowning in dashboards full of numbers that flatter but never change a decision. Its core principle is to focus on the One Metric That Matters (OMTM) right now, matched to your business model and stage, and to treat everything else as noise that feels like progress. A metric earns attention only if it changes what you do next.

The skill distinguishes good metrics (comparative, understandable, expressed as a ratio or rate, and behavior-changing) from vanity metrics (totals, cumulative charts, blended averages that only go up). It teaches lens pairs (qualitative vs quantitative, exploratory vs reporting, leading vs lagging, correlated vs causal), the discipline of cohorts and segments to keep time and comparisons honest, and the OMTM paired with a counter-metric and a pre-committed 'line in the sand.' A reproducible 0-10 scoring rubric rates metric choices, dashboards, and instrumentation plans and reports the changes needed to reach 10/10. Reference files cover metrics by business model, the five startup stages, benchmarks, and detailed case studies (a SaaS dashboard cut from 34 widgets to one number, a marketplace measuring the wrong thing) showing the method applied end to end.

It targets founders, product managers, and growth teams choosing metrics for a startup or feature, auditing a dashboard for vanity metrics, setting targets and baselines, or instrumenting a product by model and stage. It is a benign analytical and conceptual guide with no executable code, external calls, or risky behavior.

FAQ

What is the One Metric That Matters?

The OMTM is the single number that tells you whether the riskiest part of your business is working right now, chosen for your specific business model and stage. Everything else is treated as noise; the discipline is knowing your model, knowing your stage, and tracking that one number.

How does it tell good metrics from vanity metrics?

A good metric is comparative, understandable, a ratio or rate, and behavior-changing. Vanity metrics are totals, page views, and cumulative charts that only go up and only make you feel good. A cumulative up-and-to-the-right chart is the most reliable vanity tell.

Why does it emphasize cohorts and segments?

Cohorts make time honest by comparing users by signup period so real improvement is not hidden inside blended averages, and segments make comparisons honest by splitting on channel, plan, and geography so a flat aggregate does not mask one segment soaring while another collapses.

What is a counter-metric and a line in the sand?

A counter-metric guards against gaming your OMTM (for example, watching trial signups so you don't strangle the funnel while optimizing retention depth), and a line in the sand is a pre-committed target with a written response for hitting or missing it.

How does it score a metrics setup?

It rates metric choices, dashboards, and instrumentation plans 0-10 against the principles, where 9-10 means one OMTM matched to model and stage with a counter-metric, a committed target, and cohorted, segmented data, and low scores indicate vanity metrics or numbers chosen to impress investors.

All Files

6 files
references/case-studies.md13.1 KB
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SKILL.md16.5 KB
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references/business-model-metrics.md13.8 KB
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references/five-stages.md12.2 KB
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references/omtm.md11.4 KB
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references/good-metrics.md13.8 KB
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Install lean-analytics

Download and extract the skill files to your .claude/skills/ directory.

Quick Setup:

  1. Copy the skill folder to .claude/skills/
  2. Claude will automatically detect and use the skill

Repository

wondelai/skills