COUNTER 5.1 Reporting
Standards-compliant usage statistics for librarians and consortia
R2 Digital Library is fully compliant with the Release 5.1 COUNTER Code of Practice. All usage reports are available in TSV and JSON formats via the admin dashboard and programmatically via the SUSHI REST API.
Available Reports
Usage at the book/title level — the standard report for monograph collections.
Requests and unique item requests for books, with section filters.
Aggregated database-level usage across your entire R2 subscription.
Platform-wide searches, requests, and investigations.
Chapter-level granularity for content-level analysis.
Legacy COUNTER Release 4 (BR1, BR2, JR1, JR2)
For institutions still auditing against the R4 baseline, R2 also emits the four legacy reports in TSV format. Underlying events are the same as R5; the reports just apply the R4 shape + metric mapping.
Successful Title Requests by Month and Title. Legacy R4 format.
Successful Section Requests by Month and Title. Legacy R4 format.
Successful Full-Text Article Requests by Month and Journal.
Access Denied by Journal and Category (licensing + concurrent-limit turnaways).
/api/counter/reports/r4/{br1|br2|jr1|jr2}?begin_date=2026-01-01&end_date=2026-12-31&api_key=…