FDAT Repository REST API
Keyless, read-only JSON REST API of FDAT, the university's institutional research data repository, operated by the Digital Humanities Center on the InvenioRDM platform and served from the university's own host fdat.uni-tuebingen.de. Verified live 2026-09-01: GET /api/records?size=1 returns 200 application/json with 437 published records and faceted aggregations (access_status open 265 / restricted 169 / embargoed 2 / metadata-only 1, file_type, resource_type); GET /api/records/{id} returns 200 with ETag, a Link rel="linkset" header and a links object exposing doi, self_doi, parent_doi, files, media_files, versions, archive, communities, access_grants, requests and both self_iiif_manifest and self_iiif_sequence; GET /api/communities and GET /api/vocabularies/languages also return 200. Records carry DataCite DOIs under the university's own prefix (e.g. 10.57754/FDAT.zvknn-g0x34) and typed ORCID identifiers on creators. Rate limiting is advertised in headers — X-RateLimit-Limit 500, Retry-After 60. Errors are a plain JSON envelope: {"status": 404, "message": "The persistent identifier does not exist."}. The contract itself is InvenioRDM's, shared by every deployment of that software, so no OpenAPI is saved under this institution — but the deployment, the host, the admin contact and the data are Tübingen's. Note that robots.txt disallows /api for crawlers; the endpoint is open but bulk crawling is not invited.