The service provides crowdsourced ratings of impact by scholars on their fields through citation analysis that evaluates how frequently their published papers appear in reference lists of other papers. Rankings rise when a scholar's work is cited more frequently and by other scholars whose work also is highly ranked. It is available as a browser plug-in, which tracks users' interactions with papers discovered during research in Google Scholar, and as a web service with full API access to all ratings data.
API methods support retrieval of a list of authors tracked in the system, or simply the number of authors tracked, with potential to filter by Thomson Reuters Citation Index and by discipline. Methods allow retrieval of ratings data for a particular author or set of authors specified by name or system identifier. Methods also allow retrieval of lists of disciplines tracked and possible overlaps or other relationships between them.