Is Reminders App Linkable?:

I just want to share a script which syncs due reminders to the Calendar app and it also links back to the original reminder. So it contains a way to link to specific reminders.

This undocumented x-apple-reminderkit://REMCDReminder/${UUID} URL scheme works on the latest version of iOS and macOS. The ${UUID} part can be found via AppleScript.

The only problem remaining for Hook right now that there no scripting API that I’m aware of to get the currently selected reminder.