Overview
RPI Print API is an API for automating book creation and printing.
One of the core resources for Print API is a print asset, from which a book is printed. A print-asset is a collection of PDF or image files and metadata representing a printable product.
Books require a cover PDF, a guts PDF (interior, pages) and a product SKU.
Print assets are automatically created from the PDFs that are referenced when you create orders. An order is a resource that contains one or more print assets (as order items) that are to be printed and shipped to a shipping address.