If you're building a music app with Apple Music integration, this is a time saver. MusicKit's ApplicationMusicPlayer automatically handles Now Playing info like track titles, artwork, and playback state, so you don't need to manually update MPNowPlayingInfoCenter. The skill documents what you get for free and what you still need to handle yourself, which is exactly the kind of thing you'd otherwise spend 30 minutes figuring out through trial and error. It's from the axiom repository by charleswiltgen, which has solid traction with nearly 1,000 GitHub stars and passes all security audits. Straightforward documentation that keeps you from reinventing the wheel.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-now-playing-musickit