retention-calculator

Quick Review

This skill is severely underdeveloped. While it has clean structure and clear trigger patterns, it provides no actual retention calculation methodology, formulas, or implementation details. The description is circular (mentioning 'retention calculator' repeatedly without defining what it does), and there's zero task knowledge - no cohort analysis steps, retention rate formulas, time-window configurations, or data processing logic. A CLI agent reading this would have no idea how to calculate retention metrics (cohort retention, rolling retention, N-day retention, etc.). The skill adds no value over a general-purpose agent, as it contains no domain-specific retention calculation knowledge or automation. To be useful, it needs concrete calculation methods, SQL query templates for cohort analysis, visualization patterns for retention curves, and clear parameter specifications.