Library Sierra API (Innovative Interfaces)
The library management system's Sierra REST API, live on the University of Glasgow Library's own catalogue host. /iii/sierra-api/v6/info/token returned 401 on 2026-08-30 — present and credentialed rather than absent. Keys are issued by the library to named partners; there is no public registration path and no public documentation on gla.ac.uk. Recorded because a live credentialed endpoint is a finding, not a gap.