MusicThread is "a website to create and share lists of music" by Ed Wellbrook. I recently started using it to save new tracks I've found and new albums, which are then cross-posted to my Mastodon account with Echo.

The iOS app, currently in beta, has a share sheet extension for adding to a thread, but for MacOS I needed to make something in Shortcuts. The shortcut I've made (after a lot of ranting about how bad shortcuts is) can either ask for a music link to add, or be used directly from Apple Music under the share menu. It then asks which thread to add the link to.

Download Add to MusicThread Shortcut