WorldCat Registry-based Web services help you power "library lookup" functionality in Web sites, mobile apps and more, using the WorldCat Registry API.
A free service for all libraries and consortia helping to raise the visibility of libraries on behalf of the OCLC membership and the library community
Maintain a single profile where you store information about your institutional identity, online services, relationships, contacts and more. Learn more »
Want to create, update a Registry profile?
Sign in or create an account at OCLC Service Configuration »
This site provides only search and display of public WorldCat Registry information. To manage your existing institutional profile or to create a new profile, go to OCLC Service Configuration. Sign in using the same user account and password you used previously for the WorldCat Registry, or create a new account.
For developers
For consortium managers
WorldCat Registry lets you simplify the administration of your group.
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For content and service vendors
WorldCat Registry provides unambiguous identification of institutions and a single source of up-to-date customer data. Learn more »