Want to know something about published science fiction or fantasy? Forget Goodreads or Wikipedia bibliographies, the ISFDB has ridiculously comprehensive details about every book, author or magazine I’ve looked up.
Google will give you ISFDB results if you search for an author or title plus “isfdb” but it’s not nearly as high in the rankings as it should be.
I’ve had the idea for a while to use an LLM to gather metadata about books for me as well as generate tag lists for themes, plot, writing style, etc for everything in my ebook library. You could also generate non spoiler plot summaries and produce recommendations for similar books.