01 February 2022

This experimental research project has concluded. The research prototype  application and API are no longer supported or maintained by OCLC services.

The information on this page is provided for historical purposes only. Please note this content may include details that are out-of-date and broken links.

Thank you for your interest, and please explore the OCLC Research website to learn more about our current research.

Kindred Works


OCLC Research has developed an experimental service that provides a list of items similar to an item of interest. The prototype service uses various characteristics of a sample work, such as classification numbers, subject headings, and genre terms, to retrieve related resources from WorldCat. This approach is called content-based recommendation.

The recommendations are accessible through a user interface and through an application programming interface (API). The user interface, Kindred Works, provides basic search functionality; users can search by author, title, ISBN, or OCLC number. The recommendations may include books, ebooks, audiobooks, music, and video materials.

The recommendations can be customized to the collection of an individual library by adding the library’s OCLC holding symbol to the query. This feature is limited to libraries that participate in WorldCat.org. The API is intended to be used by software developers to integrate recommendations into another service or application, for example, a library catalog or other discovery interface.


This project leverages WorldCat content in a demonstration interface and an experimental API.


The user interface is available at http://experimental.worldcat.org/kindredworks/.

The API is available at http://experimental.worldcat.org/recommender/.


NextSpace Article

How Kindred Works … works



Additional Resources

link to Blade Runner  link to The Big Short  link to Simple Soups link to The Book Thief



Use of our prototypes is subject to OCLC's terms and conditions. By continuing past this point, you agree to abide by these terms.

Try the online demo

The application programming interface (API) is available here.


Diane Vizine-Goetz

Team Members

JD Shipengrover

Roger Thompson

Harry Wagner