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Last edited by raybb
July 18, 2021 | History

Developer Center / APIs

Open Library offers a suite of APIs to help developers get up and running with our data. This includes RESTful APIs, which make Open Library data availabile in JSON, YAML and RDF/XML formats. There's also an earlier, now deprecated JSON API which is preserved for backward compatibility.

Every Page on Open Library is an API

You can return bibliographic data by simply adding an .rdf/.json/.yml extension to the end of any OL bibliographic identifier, for instance: or Many pages, such as the Books, Authors, and Lists, will include links to their RDF and JSON formats.

Bulk Access

Our APIs should not be used for bulk download of Open Library data. If you want a dump of complete data, please read about your Bulk Download options, or email us at


We encourage developers to ask questions by opening issues on Github and on our gitter chat channel.

Friends using Open Library APIs

Several developers are creating amazing things with the Open Library APIs:

Are you using the Open Library APIs? We'd love to hear about it! Please email us at info@.


July 23, 2021 Edited by raybb all links https
July 18, 2021 Edited by Mek fixing email
July 18, 2021 Edited by Mek Edited without comment.
July 18, 2021 Edited by Mek Edited without comment.
November 12, 2009 Created by George Building out the sitemap