north-starlisted
Install: claude install-skill Sidsaladi9/persona-os
# North Star Metric
Defines a single North Star Metric (NSM) that measures the value customers actually receive, then decomposes it into the 3-4 input metrics teams can directly influence — the North Star + input metric tree framework.
**Grounded in:** *Lean Analytics* — Croll & Yoskovitz: the One Metric That Matters and its input tree.
**Go deeper (The Product Channel):** [How to Develop and Write KPIs](https://sidsaladi.substack.com/p/how-to-develop-and-write-kpis-a-guide)
## When to use this
- The team is optimizing for revenue or signups and it's quietly degrading the product or customer experience.
- Leadership wants "one number" to rally the org but every proposal is a lagging vanity metric.
- A roadmap exists but no one can say how a given feature moves the top-line goal.
- You're setting OKRs or quarterly goals and need a metric tree to cascade them from.
- Multiple teams each chase their own metric and the numbers conflict or cancel out.
## Before you start (gather these)
- **The core value exchange**: what does a customer do in your product that means they got value? (the action, not the purchase)
- **A rough activity dataset or description**: usage counts, active users, key actions per period — pasted numbers or even ballpark ranges are fine.
- **Business model**: subscription, transactional, marketplace, ads, freemium — this shapes whether the NSM should be breadth, depth, or frequency.
- **Current metric(s)** the team reports today and who owns them.
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