PlumXPlum TM Analytics product, PlumX, is now utilizing the OCLC WorldCat API to capture library holdings. The seamless integration between PlumX and WorldCat helps scholars not only know how many books have been sold, but how many academic institutions hold those books for scholarship.
Plum Analytics provides a set of tools and services that capture, aggregate and synthesize the big data created from resources, including journal articles, books, videos, presentations and datasets, to characterize how research is used and referenced in various communities.
Plum Analytics has integrated the WorldCat Search API into its PlumX analytics dashboard to retrieve aggregate library holdings information from the WorldCat database.
The picture below shows a book that is tracked in PlumX.
At the bottom of the page you can see the metrics associated with the book. Click on the WorldCat Holdings (80 in this example), to see which libraries hold this title.