OCLC will transition to a new version of the WorldCat Registry API on 1 July 2018 which will require users to discontinue use of this version. More information

SRU/XSD Interface

This is the older interface to data in the WorldCat Registry. It provides read-only access to data and responses are marked up in proprietary XML. This interface is in maintenence mode with only critical bug fixes being added. In addition to the standard Organization information this interface has OpenURL information and Holding Location Information.