Please Note: This API is still in development and is not yet available for general use. All related documentation is subject to change.

WorldCat Discovery API

Search and find all of the resources in WorldCat and our central index, from cataloged data to article information, expressed as part of the Web of data.

  • Status: In Development
  • Sandbox access: No

What You Get

The WorldCat Discovery API exposes your collection data for items in WorldCat, including:

  • Materials held by your library and local/regional consortia
  • The global "collective collection" of all libraries around the world
  • E-resource data for hundreds of millions of articles, e-books, databases and digital items

Data from the WorldCat Discovery API utilizes Semantic Web vocabularies so your collection data can be understood by major search engines and other web harvesters. Additionally, by using Linked Data, the API will enable you to make connections to other data sources across the web.

The WorldCat Discovery API is a modern resource discovery API that supports user-friendly search features like highly relevant result sets, flexible natural language querying and faceted browsing of search results. Combined with the ability to query holdings data by library and geographic information, the API provides a comprehensive solution to extend your existing resource discovery services or build your full library discovery system.

Who Can Use It

The WorldCat Discovery API is not yet available for general use. Early access will be available in the future for those who would like to participate in Beta testing. Please stay tuned for news and announcements.

Authentication & Authorization

The WorldCat Discovery API supports the Access Token patterns.

We are a worldwide library cooperative, owned, governed and sustained by members since 1967. Our public purpose is a statement of commitment to each other—that we will work together to improve access to the information held in libraries around the globe, and find ways to reduce costs for libraries through collaboration. Learn more »