xISBN (Web service)
Use this Web service to map book-related identifiers (ISBN, LCCN, OCLC number), based on WorldCat information. Free and subscription versions are available.
xISBN is a Web service that supplies International Standard Book Numbers (ISBNs) associated with an individual intellectual work, based on information in the WorldCat database. Give it one ISBN, and it returns a list of related ISBNs and selected metadata.
They are ISBNs of other editions or version of the same "work." For example, given the ISBN of the U.S. hardcover edition of The Da Vinci Code, associated ISBNs returned by this Web service might include those for the U.S. paperback; library-bound or large-print editions; audiobooks; foreign editions; and possibly out-of-print editions.
Books are usually referenced by ISBN. However, a user looking for a book usually isn't trying to find a specific edition—they would like to see all versions of the source work. For example, an end user may have an ISBN representing a trade paper edition, but you would like your online application to reference all versions that are in print, or in a library's case, all versions in its collection.
Yes. You can try it by entering the following address in a Web browser:
where [ISBN] is a recognized ISBN. For example,
will return a list of ISBNs for editions of Frank Herbert's Dune.
There is no charge for low-volume, non-commercial use of the xISBN service. Commercial use or high-volume use (more than 500 requests per day) of the xISBN Web service is possible by order.
First, as an XML Web service, via the simple URL-based protocol that is currently deployed. We also add OpenURL 1.0 and unAPI based interfaces as well. Subscription-based use is available in three types:
Once you enter an order, we will get in touch with you to process the new order. Meanwhile, an invoice will be issued and shipped to your billing address from OCLC Finance or OCLC Regional Service Providers
The xISBN data set is regenerated from Worldcat on a monthly basis.
Yes. FRBR (Functional Requirements for Bibliographic Records) is a model for grouping bibliographic records, and is widely accepted in the library and cataloging communities. The algorithms used to generate associated ISBNs in this service are based on FRBR.
xID or xIdentifier is a categorical term that has been applied to services such as xISBN which perform grouping of related identifiers, such as ISBN or ISSN.
Yes. To join the mailing list via OCLC's LISTSERV® application, please visit http://listserv.oclc.org/scripts/wa.exe?A0=XIDENTIFIER-L.
Please contact OCLC Openly at firstname.lastname@example.org, or call or call (973) 509-7800 (U.S.), for more information.
xISBN originated from an OCLC Research project conducted by Jenny Toves and Thom Hickey. This version of the Web service was available from:
The xISBN service is designed to always return valid XML. If you make too many requests, the service will return a message with overlimit flag.