University of Tübingen
The University of Tübingen (Eberhard Karls Universität Tübingen), founded in 1477, is one of Germany's oldest public research universities and a member of the German Universities Excellence Initiative, with roughly 27,000 students in Baden-Württemberg. It runs no developer portal, publishes no OpenAPI and issues no API keys, and this profile does not pretend otherwise. What it does operate, on its own uni-tuebingen.de hosts, are four genuinely institution-run machine surfaces: the FDAT research data repository (InvenioRDM, Digital Humanities Center) exposing a keyless JSON REST API with IIIF manifests and DataCite DOIs; an OAI-PMH 2.0 provider on the same host; a second, much older OAI-PMH provider for the University Library's TOBIAS-lib publication server (DSpace, records back to 1998, xMetaDissPlus); and a Shibboleth SAML 2.0 identity provider registered in DFN-AAI since 2009 and exported to eduGAIN, asserting REFEDS Research & Scholarship and SIRTFI/SIRTFI2. Its DataCite membership is verifiable — member AWZY "IKM Universität Tübingen", repository client AWZY.FEDNNV, DOI prefix 10.57754 — as is its ROR record 03a1kwz48. The University Library additionally builds and operates TueFind, its own VuFind derivative, in the open on GitHub, and runs three national subject discovery services on it (ixTheo, RelBib, KrimDok), currently behind a proof-of-work browser challenge. Campus management (alma), the VLE and the licensed library estate sit behind SSO and are not publicly documented APIs. No InvenioRDM, DSpace or VuFind product contract is saved under this institution — those belong to their upstream projects.
University of Tübingen publishes 8 APIs on the APIs.io network. Tagged areas include Education, Higher Education, University, Germany, and Research.
The University of Tübingen catalog on APIs.io includes 1 JSON-LD context.
University of Tübingen’s developer surface includes API reference, documentation, GitHub presence, support, engineering blog, authentication, and 16 more developer resources.
8 APIs
Individual APIs this provider publishes, each with its own machine-readable definition.
Published pricing tiers and plan structures.
Documented rate limits and quota policies.
Cost, billing, and metering signals for API financial operations.
JSON-LD contexts and semantic vocabularies used across these APIs.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
aid: university-of-tubingen
name: University of Tübingen
x-type: university
x-category: Public Research University
description: 'The University of Tübingen (Eberhard Karls Universität Tübingen), founded in 1477, is one of Germany''s oldest
public research universities and a member of the German Universities Excellence Initiative, with roughly 27,000 students
in Baden-Württemberg. It runs no developer portal, publishes no OpenAPI and issues no API keys, and this profile does not
pretend otherwise. What it does operate, on its own uni-tuebingen.de hosts, are four genuinely institution-run machine surfaces:
the FDAT research data repository (InvenioRDM, Digital Humanities Center) exposing a keyless JSON REST API with IIIF manifests
and DataCite DOIs; an OAI-PMH 2.0 provider on the same host; a second, much older OAI-PMH provider for the University Library''s
TOBIAS-lib publication server (DSpace, records back to 1998, xMetaDissPlus); and a Shibboleth SAML 2.0 identity provider
registered in DFN-AAI since 2009 and exported to eduGAIN, asserting REFEDS Research & Scholarship and SIRTFI/SIRTFI2. Its
DataCite membership is verifiable — member AWZY "IKM Universität Tübingen", repository client AWZY.FEDNNV, DOI prefix 10.57754
— as is its ROR record 03a1kwz48. The University Library additionally builds and operates TueFind, its own VuFind derivative,
in the open on GitHub, and runs three national subject discovery services on it (ixTheo, RelBib, KrimDok), currently behind
a proof-of-work browser challenge. Campus management (alma), the VLE and the licensed library estate sit behind SSO and
are not publicly documented APIs. No InvenioRDM, DSpace or VuFind product contract is saved under this institution — those
belong to their upstream projects.'
type: Index
deliveryModel:
model: saas
open_source: false
commercial: true
callable_host: false
label: Hosted service · you call their endpoint
confidence: medium
source:
- pricing
generated: '2026-08-28'
method: derived
accessModel:
pricing: free
onboarding: unknown
trial: false
try_now: false
public: false
label: Free
confidence: medium
source:
- plans
generated: '2026-07-22'
method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/university-of-tubingen.png
url: https://raw.githubusercontent.com/api-evangelist/university-of-tubingen/refs/heads/main/apis.yml
tags:
- Education
- Higher Education
- University
- Germany
- Research
- Research Data
- Research Repository
- Open Access
- OAI-PMH
- Identity Federation
- Library
- DataCite
created: '2026-06-03'
modified: '2026-09-01'
specificationVersion: '0.23'
apis:
- aid: university-of-tubingen:fdat-rest
name: FDAT Repository REST API
x-operator: institution
description: '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.'
humanURL: https://uni-tuebingen.de/en/249679
baseURL: https://fdat.uni-tuebingen.de/api/records
tags:
- Research Data
- Repository
- InvenioRDM
- DataCite
- IIIF
- ORCID
properties:
- type: Documentation
url: https://dh-center.uni-tuebingen.de/fdat-policy/faq.html
- type: APIReference
url: https://fdat.uni-tuebingen.de/api/records
- type: Conformance
url: conformance/university-of-tubingen-conformance.yml
- type: Authentication
url: authentication/university-of-tubingen-authentication.yml
- aid: university-of-tubingen:fdat-oai
name: FDAT Repository OAI-PMH
x-operator: institution
description: OAI-PMH 2.0 metadata harvesting provider for the FDAT research data repository. Verified live 2026-09-01 —
verb=Identify returns 200 text/xml with repositoryName "FDAT Data Repository", baseURL https://fdat.uni-tuebingen.de/oai2d,
adminEmail fdat@dh-center.uni-tuebingen.de, earliestDatestamp 2023-04-11T15:34:13Z, granularity YYYY-MM-DDThh:mm:ssZ and
deletedRecord "no". verb=ListMetadataFormats returns marcxml and oai_dc; verb=ListSets enumerates faculty community sets
such as community-faculty_eco_social ("Faculty of Economics and Social Sciences"). Institution-hosted and institution-administered.
humanURL: https://uni-tuebingen.de/en/249679
baseURL: https://fdat.uni-tuebingen.de/oai2d
tags:
- Research Data
- OAI-PMH
- Metadata
- Harvesting
- DataCite
properties:
- type: Documentation
url: https://www.openarchives.org/OAI/openarchivesprotocol.html
- type: Conformance
url: conformance/university-of-tubingen-conformance.yml
- aid: university-of-tubingen:tobias-lib-oai
name: TOBIAS-lib / Publikationssystem UB Tübingen OAI-PMH
x-operator: institution
description: OAI-PMH 2.0 provider for the University Library's institutional publication server (TOBIAS-lib), running DSpace
on the library's own host publikationen.uni-tuebingen.de (ub01.uni-tuebingen.de, 134.2.5.97). Verified live 2026-09-01
— verb=Identify returns 200 text/xml with repositoryName "Publikationssystem UB Tuebingen", adminEmail edl-admin@ub.uni-tuebingen.de,
repositoryIdentifier publikationen.uni-tuebingen.de, sampleIdentifier oai:publikationen.uni-tuebingen.de:10900/64291,
earliestDatestamp 1998-12-16T23:00:00Z and deletedRecord "transient" — twenty-five years of theses, dissertations and
open-access publications. verb=ListMetadataFormats returns didl, mods, ore and xMetaDissPlus (the German national dissertation
delivery profile for the DNB) among others; a second base URL /oai/driver?verb=Identify also answers 200. This endpoint
was missing from the June 2026 profile entirely. The DSpace REST API on the same host is not exposed (/rest/status 403,
/server/api 404), so only the OAI-PMH interface is catalogued. The DSpace contract is the product's and is not saved here.
humanURL: https://publikationen.uni-tuebingen.de/xmlui/
baseURL: https://publikationen.uni-tuebingen.de/oai/request
tags:
- Research Repository
- OAI-PMH
- DSpace
- Open Access
- Theses
- xMetaDissPlus
properties:
- type: Documentation
url: https://www.openarchives.org/OAI/openarchivesprotocol.html
- type: Conformance
url: conformance/university-of-tubingen-conformance.yml
- aid: university-of-tubingen:identity-federation
name: University of Tübingen Shibboleth Identity Provider (DFN-AAI / eduGAIN)
x-operator: federation
description: 'Institution-operated Shibboleth SAML 2.0 identity provider, registered in DFN-AAI — the German national research
and education identity federation — and published as machine-readable metadata through the federation''s MDQ service.
EntityID https://idp.uni-tuebingen.de/shibboleth, DisplayName "Universität Tübingen" / "University of Tübingen", shibmd:Scope
uni-tuebingen.de, registered 2009-05-26 under registrationAuthority https://www.aai.dfn.de and exported to eduGAIN. SSO
endpoints: /idp/profile/SAML2/POST/SSO, /idp/profile/SAML2/Redirect/SSO and /idp/profile/SAML2/SOAP/ECP, plus a SAML 2.0
AttributeAuthorityDescriptor with a SOAP AttributeService. NameID formats persistent and transient. The signing certificate
is issued to CN=idp.uni-tuebingen.de, OU=ZDV, O=Universitaet Tuebingen — the university''s own computing centre holds
the key. Entity attributes assert REFEDS Research & Scholarship support, SIRTFI and SIRTFI2 assurance certification, and
membership of bwIDM, the Baden-Württemberg federated identity programme (independently corroborated by the bwIDM link
in FDAT''s own footer). A federation is shared by definition; the IdP behind it is entirely the institution''s, and this
is the strongest institution-operated machine surface the university has. RETRIEVAL WARNING: the DFN MDQ service answers
200 with a signed but EMPTY EntitiesDescriptor for an unregistered entityID — the plausible-looking https://idp.uni-tuebingen.de/idp/shibboleth
is exactly such a false 200.'
humanURL: https://uni-tuebingen.de/en/einrichtungen/zentrum-fuer-datenverarbeitung/dienstleistungen/digitale-identitaet/single-sign-on/
baseURL: https://mdq.aai.dfn.de/entities/https%3A%2F%2Fidp.uni-tuebingen.de%2Fshibboleth
tags:
- Identity Federation
- SAML
- Shibboleth
- DFN-AAI
- eduGAIN
- bwIDM
- Single Sign-On
properties:
- type: Documentation
url: https://www.aai.dfn.de/en/join/
- type: Conformance
url: conformance/university-of-tubingen-conformance.yml
- type: Authentication
url: authentication/university-of-tubingen-authentication.yml
- aid: university-of-tubingen:datacite-membership
name: DataCite membership and DOI registration (member AWZY)
x-operator: registry
description: 'The university is a DataCite member and DOI registrant — a fact about the institution, recorded here as a
membership rather than as a contract. The DataCite REST API is DataCite''s and is never saved under this slug. Evidence,
verified 2026-09-01: https://api.datacite.org/providers/awzy returns member AWZY, name "IKM Universität Tübingen", memberType
consortium_organization, country DE, created 2020-11-09, rorId https://ror.org/03a1kwz48. https://api.datacite.org/clients/awzy.fednnv
returns repository client AWZY.FEDNNV, name "FDAT", url https://fdat.uni-tuebingen.de, clientType repository, year 2022,
re3data https://doi.org/10.17616/R3PM1K (re3data r3d100012296). https://api.datacite.org/prefixes/10.57754 relates DOI
prefix 10.57754 to that client and provider, and live FDAT records mint DOIs of the form 10.57754/FDAT.{id}. Six further
repository clients sit under the same AWZY member, reflecting UB Tübingen''s role as a DOI agent for theology publications.
No Crossref membership exists — api.crossref.org returns zero results for Tübingen.'
humanURL: https://www.re3data.org/repository/r3d100012296
baseURL: https://api.datacite.org/clients/awzy.fednnv
tags:
- DataCite
- DOI
- Registry
- Membership
- Research Data
- Persistent Identifiers
properties:
- type: Conformance
url: conformance/university-of-tubingen-conformance.yml
- aid: university-of-tubingen:ror-registration
name: ROR registration (Research Organization Registry)
x-operator: registry
description: The institution's entry in the Research Organization Registry, ROR ID https://ror.org/03a1kwz48. A registry
membership, not a contract — the ROR API is ROR's. Verified 2026-09-01 via https://api.ror.org/organizations/03a1kwz48
(200), which returns the University of Tübingen with website https://www.uni-tuebingen.de/en/university.html. This is
the same ROR ID DataCite carries on the university's member record (AWZY), which is what ties the DOI registrant to the
institution rather than to a vendor. Note that the neighbouring Tübingen ROR record 00pjgxh97 is the University HOSPITAL
(Universitätsklinikum Tübingen, UKT) — a legally distinct body and not this institution.
humanURL: https://ror.org/03a1kwz48
baseURL: https://api.ror.org/organizations/03a1kwz48
tags:
- ROR
- Registry
- Membership
- Persistent Identifiers
- Research
- aid: university-of-tubingen:tuefind-discovery
name: TueFind subject discovery services (ixTheo, RelBib, KrimDok)
x-operator: institution
description: Three national subject-information discovery services built and operated by Tübingen University Library on
TueFind, the library's own VuFind derivative, whose source it develops in the open at https://github.com/ubtue/tuefind
(PHP, actively committed as of 2026-09-01). ixTheo (Index Theologicus, ixtheo.de), RelBib (relbib.de) and KrimDok (krimdok.uni-tuebingen.de)
are DFG-funded Fachinformationsdienste — the software, the hosting and the data curation are all the library's. VuFind
exposes a /api/v1 search and record API, but as of 2026-09-01 all three hosts sit behind a SHA-256 proof-of-work browser-verification
interstitial (17 leading zero bits, pow_token cookie, 1800s TTL) that answers 200 with an identical 2,148-byte challenge
page for every path, including /api/v1/search. The challenge page is branded with the University of Tübingen and University
Library logos, which confirms the operator. Recorded as a live but bot-challenged surface, not as a dead one, and NOT
as a verified API contract — the challenge was not defeated. The VuFind contract would in any case be the product's.
humanURL: https://ixtheo.de/
baseURL: https://ixtheo.de/api/v1
tags:
- Library
- Discovery
- VuFind
- TueFind
- Open Source
- Bot Challenge
properties:
- type: SourceCode
url: https://github.com/ubtue/tuefind
- aid: university-of-tubingen:library-discovery
name: UB Tübingen library catalogue (IBS|BW consortium tenant)
x-operator: tenant
description: 'The University Library''s main catalogue and discovery interface. Verified 2026-09-01: https://katalog.ub.uni-tuebingen.de/
redirects (301) to https://rds-tue.ibs-bw.de/opac/, a Tübingen-scoped instance on the IBS|BW (Integriertes Bibliothekssystem
Baden-Württemberg) consortium platform, which answers 403 to an anonymous non-browser client. The instance and its holdings
are Tübingen''s; the platform and its contract belong to the consortium and its library-systems vendor, so nothing is
saved here. Its companion campus portal alma.uni-tuebingen.de serves a meta-refresh into /alma/rds?state=user — a login
portal, no public API. Recorded as a tenant relationship, which is a real institutional fact.'
humanURL: https://ub.uni-tuebingen.de/
baseURL: https://rds-tue.ibs-bw.de/opac/
tags:
- Library
- Discovery
- Catalog
- Tenant
- IBS|BW
common:
- type: Website
url: https://uni-tuebingen.de/en/
- type: APIReference
url: https://fdat.uni-tuebingen.de/api/records
- type: Documentation
url: https://dh-center.uni-tuebingen.de/fdat-policy/faq.html
- type: ResearchRepository
url: https://uni-tuebingen.de/en/249679
- type: LibraryCatalog
url: https://ub.uni-tuebingen.de/
- type: IdentityFederation
url: https://uni-tuebingen.de/en/einrichtungen/zentrum-fuer-datenverarbeitung/dienstleistungen/digitale-identitaet/single-sign-on/
- type: ResearchComputing
url: https://uni-tuebingen.de/en/einrichtungen/zentrum-fuer-datenverarbeitung/dienstleistungen/server/computing/
- type: GitHub
url: https://github.com/ubtue
- type: SourceCode
url: https://github.com/se-tuebingen
- type: GitHubOrganization
url: https://github.com/ubtue/tuefind
- type: Support
url: https://uni-tuebingen.de/en/einrichtungen/zentrum-fuer-datenverarbeitung/dienstleistungen/a-z/
- type: TermsOfService
url: https://fdat.uni-tuebingen.de/disclaimer
- type: PrivacyPolicy
url: https://uni-tuebingen.de/en/data-privacy-statement
- type: Blog
url: https://uni-tuebingen.de/en/university/news-and-publications/press-releases/
- type: LinkedIn
url: https://www.linkedin.com/company/university-of-tuebingen
- type: Conformance
url: conformance/university-of-tubingen-conformance.yml
- type: Authentication
url: authentication/university-of-tubingen-authentication.yml
- type: DomainSecurity
url: security/university-of-tubingen-domain-security.yml
- type: Plans
url: plans/university-of-tubingen-plans-pricing.yml
- type: RateLimits
url: rate-limits/university-of-tubingen-rate-limits.yml
- type: FinOps
url: finops/university-of-tubingen-finops.yml
- type: Review
url: review.yml
x-coverage:
state: covered
reason: covered
detail: 'Four institution-operated machine surfaces were found and verified live on 2026-09-01 — the FDAT InvenioRDM REST
API and its OAI-PMH provider on fdat.uni-tuebingen.de, a second and far older OAI-PMH provider for the University Library''s
TOBIAS-lib DSpace publication server on publikationen.uni-tuebingen.de (records back to 1998, xMetaDissPlus), and a Shibboleth
SAML 2.0 identity provider published in the DFN-AAI metadata aggregate and exported to eduGAIN. Five education-regime
domain standards are evidenced from public endpoints: oai-pmh, shibboleth, saml, orcid and datacite. Two registry memberships
are recorded as memberships, never as contracts: DataCite (member AWZY "IKM Universität Tübingen", client AWZY.FEDNNV,
prefix 10.57754) and ROR (03a1kwz48). One tenant relationship is recorded: the library catalogue on the IBS|BW consortium
platform (katalog.ub.uni-tuebingen.de → rds-tue.ibs-bw.de). No OpenAPI, no developer portal, no llms.txt, no .well-known
document and no self-service key issuance exist anywhere on the institution''s public surface, and no contract has been
generated to stand in for one — the InvenioRDM, DSpace and VuFind contracts are product contracts shared by every deployment
of that software and belong in their upstream repos, not here. The library''s own TueFind VuFind derivative (ixTheo, RelBib,
KrimDok) is genuinely institution-built and open-source on GitHub, but all three hosts currently answer every path, /api/v1
included, with a SHA-256 proof-of-work browser challenge; that is recorded as live-but-challenged and the challenge was
not defeated. Campus management (alma), the VLE (ILIAS/Moodle) and the licensed library estate sit behind SSO and were
not probeable. No Crossref membership and no open-data portal exist — data. and opendata.uni-tuebingen.de do not resolve
at all.'
generated: '2026-09-01'
method: probed
evidence:
- url: https://fdat.uni-tuebingen.de/api/records?size=1
status: 200
- url: https://fdat.uni-tuebingen.de/api/records/zvknn-g0x34
status: 200
- url: https://fdat.uni-tuebingen.de/api/communities?size=1
status: 200
- url: https://fdat.uni-tuebingen.de/api/vocabularies/languages?size=1
status: 200
- url: https://fdat.uni-tuebingen.de/api/records/doesnotexist123
status: 404
- url: https://fdat.uni-tuebingen.de/oai2d?verb=Identify
status: 200
- url: https://fdat.uni-tuebingen.de/oai2d?verb=ListMetadataFormats
status: 200
- url: https://fdat.uni-tuebingen.de/oai2d?verb=ListSets
status: 200
- url: https://publikationen.uni-tuebingen.de/oai/request?verb=Identify
status: 200
- url: https://publikationen.uni-tuebingen.de/oai/request?verb=ListMetadataFormats
status: 200
- url: https://publikationen.uni-tuebingen.de/xmlui/
status: 200
- url: https://publikationen.uni-tuebingen.de/rest/status
status: 403
- url: https://publikationen.uni-tuebingen.de/server/api
status: 404
- url: https://mdq.aai.dfn.de/entities/https%3A%2F%2Fidp.uni-tuebingen.de%2Fshibboleth
status: 200
- url: https://mdq.aai.dfn.de/entities/https%3A%2F%2Fidp.uni-tuebingen.de%2Fidp%2Fshibboleth
status: 200
- url: https://idp.uni-tuebingen.de/idp/profile/Metadata/SAML
status: 200
- url: https://api.datacite.org/providers/awzy
status: 200
- url: https://api.datacite.org/clients/awzy.fednnv
status: 200
- url: https://api.datacite.org/prefixes/10.57754
status: 200
- url: https://api.ror.org/organizations/03a1kwz48
status: 200
- url: https://api.crossref.org/members?query=T%C3%BCbingen
status: 200
- url: https://ixtheo.de/api/v1/search?lookfor=test
status: 200
- url: https://krimdok.uni-tuebingen.de/api/v1/search?lookfor=test
status: 200
- url: https://katalog.ub.uni-tuebingen.de/
status: 403
- url: https://alma.uni-tuebingen.de/
status: 200
- url: https://uni-tuebingen.de/llms.txt
status: 404
- url: https://uni-tuebingen.de/.well-known/security.txt
status: 404
- url: https://uni-tuebingen.de/apis.json
status: 404
- url: https://fdat.uni-tuebingen.de/openapi.json
status: 404
- url: https://data.uni-tuebingen.de/
status: 0
- url: https://opendata.uni-tuebingen.de/
status: 0
- url: https://api.uni-tuebingen.de/
status: 0
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
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