Covers the full HealthKit and WorkoutKit stack from authorization and privacy patterns through live workout sessions, anchored queries, background delivery, and newer APIs like State of Mind and Medications. The quick reference table is genuinely useful for mapping symptoms to the right doc, and the conflict resolution section does the hard work of clarifying boundaries with watchOS presentation, concurrency patterns, and general data sync. If you're building anything that touches health data or workout tracking on iOS or watchOS, this handles the framework specifics while routing you to other skills for platform or UI concerns. The decision tree is overkill but the cross-suite routing is honest about what lives where.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-health