Stud.IP Learning Management REST and JSON:API
The university self-hosts Stud.IP, the open-source German learning management system, at studip.uni-goettingen.de and exposes its REST and JSON:API surfaces there. Anonymous callers receive "401 Unauthorized (no consumer)" from /api.php and a JSON:API-shaped error from /jsonapi.php/v1, which confirms both frameworks are live. Consumer credentials are issued by the institution to affiliated developers; there is no public registration flow, so no contract is saved here. The deployment is the university's; the API contract is upstream Stud.IP's.