WorldCat Search API

Developer-level Access to WorldCat - for bibliographic holdings and location data

  • Status: Production
  • Sandbox access: Yes

What you get

  • Search WorldCat and retrieve bibliographic records for cataloged items such as books, videos, music and more in WorldCat
  • Retrieve records in MARC XML or Dublin Core formats
  • Get item information in the standard bibliographic citation formats (APA, Chicago, Harvard, MLA, and Turabian
  • Find about libraries that own an item and retrieve links to online catalog records when available.

Who can use it

  • Libraries that maintain both WorldCat Discovery and OCLC Cataloging subscriptions. Production access is limited to 50,000 requests per day.
  • Partners interested in integrating WorldCat data into their software
  • This API has specific Terms and Conditions.

Commercial partnerships are also available.

Authentication & Authorization

The WorldCat Search API supports the WSKey Lite pattern.


API access to

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