In case someone affiliated with the project is around, saw this feature request from last year to integrate Standard Ebooks as an additional source to Myne, an Android app to download and read Project Gutenberg ebooks on the device, but the dev failed to find a way to programatically get the books and closed the ticket, and i too failed to find an API or something similar when i checked. Is there such a thing? In theory you could do it with web scraping, but that's a tool of last resort in my opinion, and it's far better to have an API or a similar feature.