If you're building anything for Apple Watch, this is your routing hub. It covers the full watchOS stack: independent apps, Smart Stack widgets, complications, controls, Watch Connectivity for paired devices, background tasks, and migrating off deprecated ClockKit. The quick reference table is legitimately helpful for knowing which doc handles what, and the conflict resolution section clearly splits responsibilities with related skills like axiom-swiftui for cross-platform patterns and axiom-health for workout sessions. It's opinionated about when to use watchOS-specific approaches versus shared SwiftUI code, which saves you from guessing. Basically assumes you know iOS development and need the watch-specific gotchas and APIs.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-watchos