I had a comment on my mod about storing the Golem book in my bookshelfs, so I thought, why don't you add the book to forge tags? under forge/tags/items/books and the paper under forge/tags/items/paper ? seems like a smart idea to have books and papers under forge tags for mod compatibility.

Just a thought, as for now I'm suggesting people to add items under a datapack, but this seems like a better option for compatibility between mods.

See 0dba4ea