What problem does it solve? Product teams often track scattered or vanity metrics that fail to align strategy, prioritize work, or predict retention and revenue. This Skill guides you through identifying, validating, and operationalizing a North Star Metric grounded in your business model. ## Core Features & Use Cases - North Star Definition: Works through Core Value identification, the Frequency x Core Action x Breadth formula, and validation tests to produce a candidate metric. - Validation & Guardrails: Applies measurable, actionable, leading-indicator, and tradeoff tests, plus 2-3 guardrail metrics with thresholds and breach actions. - Input Metric Driver Tree: Breaks the North Star into team-owned input metrics and outputs a structured analysis to outputs/analyses/north-star-[quarter].md. - Use Case: A Series A SaaS team unsure whether to optimize signups or activation uses the Skill to evaluate retention data, select "Weekly Active Teams" as their North Star, and define guardrails for NPS and CAC. ## Quick Start Ask the assistant to help you define or validate your North Star metric using your business model and retention data.