Open Library logo
Last edited by Agent Sapphire
February 27, 2013 | History

Developers / API

Open Library has developed a suite of APIs to help developers get up and running with our data. We encourage interested developers to join the ol-tech mailing list to stay up-to-date with the latest news, or dive in with our own development team at our bug tracker or our GitHub source code repository.


Open Library has a RESTful API, best used to link into Open Library data in JSON, YAML and RDF/XML. There's also an earlier JSON API, which is deprecated now. This is only retained for backward compatibility.

You can also return bibliographic data by simply adding an .rdf/.json/.yml extension to the end of any OL bibliographic identifier. There are also links on pages to RDF and JSON versions of Works, Editions and Authors.

Read APIs

Access to Records in Bulk

Our API 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 info@.

Open Library in the Wild

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@.


March 29, 2021 Edited by Agent Sapphire remove link to Firefox plugin
October 19, 2018 Edited by Charles Horn update github url
October 11, 2013 Edited by Anand Chitipothu converted absolute links to to relative.
February 27, 2013 Edited by Anand Chitipothu added link to search API.
November 12, 2009 Created by George Building out the sitemap