I add books to Calibre in order to load them on my Kindle. Claw gets the Calibre files, including both metadata.db and full-text-search.db, via Syncthing.
I can ask it to perform metadata updates, since it's a two-way sync, or ask questions about the content.
My favorite use so far has been giving it a copy of my Calibre library. After having it write a few scripts and a skill, I can ask it questions about any book I’m reading.
This week I had it order a series internally chronological.
I could use the search on my Kindle or open Calibre myself, but a Signal message is much faster when it’s already got the SQLite file right there.
I can ask it to perform metadata updates, since it's a two-way sync, or ask questions about the content.