Federico Viticci blogs about RemCTL, a command-line tool he built for Reminders:

So I decided to take matters into my own hands and build the Reminders CLI of my dreams with Codex. After about two months of work and everyday tests, the result is RemCTL (short for “Reminders Control”): to the best of my knowledge, it’s the only Reminders CLI that can read and write any kind of reminder and Reminders metadata…

Really impressive. I installed it to play with, even though I don’t really use Reminders. Works well.