{"items":[{"key":"overview","description":"Free overview - API status and sample search. Try before you buy.","streaming":false},{"key":"lookup","description":"Look up a book by ISBN-10, ISBN-13, or Open Library ID (e.g., OL7353617M)","streaming":false},{"key":"search","description":"Search books by title, author, subject, or general query","streaming":false},{"key":"author","description":"Get author information and their works by Open Library author ID or search by name","streaming":false},{"key":"subjects","description":"Get books by subject/topic (e.g., \"machine_learning\", \"science_fiction\")","streaming":false},{"key":"covers","description":"Get book cover URLs by ISBN, Open Library ID, or cover ID. Returns multiple sizes.","streaming":false}]}