I finally finished up my post on Bibilobunny, my book note extraction tool for Kindle and Play Books:
I hope to add support for getting notes off Nook and Kobo next. You can follow the instructions to create your own book quote bot, and you can follow mine here: nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqp0ejzlvrcp3y9ty3pnedj5wrscl8zd6chdqep0ejwn2mdgel0ntssdzh3w