There is a fork of Readarr that works pretty well:
Comment on Recommendations on self hosting ebooks
inclementimmigrant@lemmy.world 3 weeks agoWe’ll that’s a shame to hear that readarr was abandoned.
OriginalJay@lemmy.federate.lol 3 weeks ago
roofuskit@lemmy.world 3 weeks ago
Chaptarr is a thoroughly re-worked fork of Readarr. It’s been working nicely for me. Not released publicly yet, but it’s going to be soon.