Delft University of Technology (TU Delft) is the oldest and largest public technical university in the Netherlands and a member of the 4TU.Federation. Its programmable footprint is narrow, and this profile states that plainly rather than padding it. TU Delft operates exactly one public, unauthenticated API: the 4TU.ResearchData repository at data.4tu.nl, which runs on djehuty, open-source repository software written by 4TU.ResearchData and Nikhef. The /v2 surface is deliberately shape-compatible with the Figshare v2 API because that was a requirement of the 2023 migration OFF Figshare — the contract is not Figshare's, and the service runs inside TU Delft's own RIPE netblock (DUNET, 131.180.0.0/16). The other genuinely institution-operated machine-readable surface is a SAML 2.0 identity provider at login.tudelft.nl, published into the SURFconext national federation and onward to eduGAIN. Beyond those two, the picture is retirement and tenancy. The general-purpose institutional API platform at api.tudelft.nl — campus, buildings, courses, schedules, study results, organisation — no longer answers on port 80 or 443, and its documentation host apidoc.tudelft.nl has no DNS record at all. The research information portal at pure.tudelft.nl / research.tudelft.nl is an Elsevier Pure tenancy whose own API documentation canonicalises to api.elsevierpure.com: TU Delft's data, Elsevier's contract. The library discovery layer is an OCLC WorldCat tenancy. No working OAI-PMH endpoint exists on any TU Delft-operated host despite third-party registry entries claiming otherwise. TU Delft publishes no OpenAPI, no llms.txt, no scope vocabulary and no API changelog.
Delft University of Technology publishes 1 API on the APIs.io network: 4TU.ResearchData API. Tagged areas include University, Higher Education, Education, Technical University, and Research Data.
The Delft University of Technology catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
Delft University of Technology’s developer surface includes documentation, API reference, engineering blog, support, authentication, and 29 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Education & Research regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
The six quality facets above are damped to 85 points between them,
because the conditional facet above carries the other
15. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 85% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
Public REST API for the 4TU.ResearchData repository, the science/engineering/design research data repository of the 4TU.Federation, hosted and operated by TU Delft Library. Twel...
TU Delft's SimpleSAMLphp identity provider — the machine-readable half of NetID. It publishes a signed SAML 2.0 EntityDescriptor with an IDPSSODescriptor and is registered in SU...
TU Delft runs an Elsevier Pure current research information system, exposed to the public as the research portal at research.tudelft.nl / pure.tudelft.nl and to integrators as t...
aid: tu-delft
name: Delft University of Technology
x-type: university
x-category: Technical University
description: 'Delft University of Technology (TU Delft) is the oldest and largest public technical university in the Netherlands
and a member of the 4TU.Federation. Its programmable footprint is narrow, and this profile states that plainly rather than
padding it. TU Delft operates exactly one public, unauthenticated API: the 4TU.ResearchData repository at data.4tu.nl, which
runs on djehuty, open-source repository software written by 4TU.ResearchData and Nikhef. The /v2 surface is deliberately
shape-compatible with the Figshare v2 API because that was a requirement of the 2023 migration OFF Figshare — the contract
is not Figshare''s, and the service runs inside TU Delft''s own RIPE netblock (DUNET, 131.180.0.0/16). The other genuinely
institution-operated machine-readable surface is a SAML 2.0 identity provider at login.tudelft.nl, published into the SURFconext
national federation and onward to eduGAIN. Beyond those two, the picture is retirement and tenancy. The general-purpose
institutional API platform at api.tudelft.nl — campus, buildings, courses, schedules, study results, organisation — no longer
answers on port 80 or 443, and its documentation host apidoc.tudelft.nl has no DNS record at all. The research information
portal at pure.tudelft.nl / research.tudelft.nl is an Elsevier Pure tenancy whose own API documentation canonicalises to
api.elsevierpure.com: TU Delft''s data, Elsevier''s contract. The library discovery layer is an OCLC WorldCat tenancy. No
working OAI-PMH endpoint exists on any TU Delft-operated host despite third-party registry entries claiming otherwise. TU
Delft publishes no OpenAPI, no llms.txt, no scope vocabulary and no API changelog.'
type: Index
accessModel:
pricing: free
onboarding: unknown
trial: false
try_now: true
public: true
label: Free
confidence: high
source:
- probed
generated: '2026-08-19'
method: probed
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/tu-delft.png
url: https://raw.githubusercontent.com/api-evangelist/tu-delft/refs/heads/main/apis.yml
tags:
- University
- Higher Education
- Education
- Technical University
- Research Data
- Open Access
- Identity Federation
- Research Repository
- Research Computing
- 4TU.Federation
- Netherlands
- Europe
created: '2026-06-03'
modified: '2026-08-19'
specificationVersion: '0.23'
x-coverage:
state: covered
reason: single_institutional_api_plus_federation_identity
detail: 'The institution''s programmable surface was probed directly rather than inferred. One public institutional API
was found and verified live (4TU.ResearchData, twelve endpoints answering HTTP 200/403/405 without credentials), and one
machine-readable identity artifact was found and retrieved (SAML 2.0 IdP metadata, cross-confirmed in the live SURFconext
aggregate). Three previously catalogued surfaces did not survive probing: the api.tudelft.nl platform is unreachable on
both ports with its documentation host removed from DNS, and neither claimed OAI-PMH interface exists — data.4tu.nl returns
a JSON 404 on every OAI path, and repository.tudelft.nl returns its soft-404 chrome on every OAI path over http and https,
while the base URL OpenAIRE advertises for it belongs to TNO''s repository. One genuine tenant relationship the June 2026
profile missed entirely was found and recorded rather than deleted: the Elsevier Pure instance at pure.tudelft.nl. The
profile is thin because TU Delft''s public programmable footprint is thin, not because the hunt was short.'
evidence:
- url: https://data.4tu.nl/v2/articles?limit=1
status: 200
- url: https://data.4tu.nl/v3/datasets?limit=1
status: 200
- url: https://data.4tu.nl/v3/groups
status: 200
- url: https://data.4tu.nl/v2/licenses
status: 200
- url: https://data.4tu.nl/v2/categories
status: 200
- url: https://data.4tu.nl/v2/account/articles
status: 403
- url: https://data.4tu.nl/v2/articles/search
status: 405
- url: https://login.tudelft.nl/sso/saml2/idp/metadata.php
status: 200
- url: https://metadata.surfconext.nl/idps-metadata.xml
status: 200
- url: https://www.tudelft.nl/.well-known/security.txt
status: 200
- url: https://pure.tudelft.nl/ws/oai?verb=Identify
status: 401
- url: https://api.tudelft.nl/
status: 0
note: TCP timeout on 443 and 80; DNS resolves to 131.180.187.26 (DUNET)
- url: https://apidoc.tudelft.nl/
status: 0
note: no DNS record
- url: https://oauth.tudelft.nl/
status: 0
note: TCP timeout on 443
- url: https://data.4tu.nl/oai?verb=Identify
status: 404
- url: https://repository.tudelft.nl/oai?verb=Identify
status: 404
- url: https://oai-pmh.tno.nl/OaiPmh?verb=Identify
status: 200
note: identifies as "TNO repository", noSetHierarchy — not TU Delft
- url: https://www.tudelft.nl/llms.txt
status: 404
- url: https://data.4tu.nl/.well-known/openid-configuration
status: 404
- url: https://opendap.4tu.nl/thredds/catalog/catalog.xml
status: 0
note: documented by the operator, times out from the public internet
apis:
- aid: tu-delft:4tu-researchdata
name: 4TU.ResearchData API
x-operator: institution
x-operator-evidence: data.4tu.nl resolves to 131.180.169.22, inside the RIPE inetnum 131.180.0.0/16, netname DUNET, org-name
"Technische Universiteit Delft". re3data record r3d100010216 names TU Delft Library as a hosting institution for the repository,
alongside the 4TU.Federation and the three partner universities. The software is 4TU's own open-source djehuty, not a
vendor platform; GET /v3/groups returns the four consortium partners as depositing groups.
description: 'Public REST API for the 4TU.ResearchData repository, the science/engineering/design research data repository
of the 4TU.Federation, hosted and operated by TU Delft Library. Twelve endpoints verified live and unauthenticated on
2026-08-19: dataset listing, search, retrieval, files and versions on /v2; datasets and depositing groups on /v3; plus
the license and category vocabularies. Depositor endpoints under /v2/account/ take an opaque personal bearer token. The
/v2 surface is backward compatible with the Figshare v2 API shape as a migration requirement — uuid supersedes the numeric
id and usage errors return precise HTTP codes rather than a blanket 400. Datasets carry versioned DataCite DOIs under
the 10.4121 prefix and expose ORCID iDs on author records.'
humanURL: https://data.4tu.nl/
baseURL: https://data.4tu.nl
tags:
- Research Data
- Open Data
- Repository
- REST
- FAIR
- DataCite
- ORCID
properties:
- type: OpenAPI
url: openapi/tu-delft-4tu-researchdata-openapi.yml
- type: JSONSchema
url: json-schema/tu-delft-4tu-dataset.json
- type: Examples
url: examples/tu-delft-4tu-researchdata-examples.json
- type: Rules
url: rules/tu-delft-4tu-rules.yml
- type: Errors
url: errors/tu-delft-4tu-errors.yml
- type: Authentication
url: authentication/tu-delft-authentication.yml
- type: Scopes
url: scopes/tu-delft-scopes.yml
- type: Conformance
url: conformance/tu-delft-conformance.yml
- type: Lifecycle
url: lifecycle/tu-delft-lifecycle.yml
- type: Vocabulary
url: vocabulary/tu-delft-vocabulary.yml
- type: Documentation
url: https://djehuty.4tu.nl/
- type: SourceCode
url: https://github.com/4TUResearchData/djehuty
- type: TermsOfService
url: https://data.4tu.nl/info/about-4turesearchdata/policies-guidelines
- type: Support
url: https://data.4tu.nl/info/about-4turesearchdata/contact
- aid: tu-delft:identity-federation
name: TU Delft SAML 2.0 Identity Provider (NetID)
x-operator: institution
x-operator-evidence: The entityID is https://login.tudelft.nl/sso/saml2/idp/metadata.php, on the institution's own registrable
domain, and the metadata document is served from that host directly with content-type application/samlmetadata+xml. The
same entity appears in SURF's live SURFconext IdP aggregate under the display names "Technische Universiteit Delft" and
"Delft University of Technology".
description: 'TU Delft''s SimpleSAMLphp identity provider — the machine-readable half of NetID. It publishes a signed SAML
2.0 EntityDescriptor with an IDPSSODescriptor and is registered in SURFconext, the Dutch national research and education
identity federation operated by SURF, which in turn publishes into eduGAIN. This is the surface class universities operate
by definition and almost never get catalogued for: it is institution-run, machine-readable, and it is what actually lets
a researcher at another institution authenticate against a TU Delft service. Note what it is NOT — there is no OpenID
Connect discovery document (login.tudelft.nl/.well-known/openid-configuration returns 403) and no OAuth 2.0 authorization
server.'
humanURL: https://www.tudelft.nl/en/it-manuals/netid
baseURL: https://login.tudelft.nl/sso/saml2/idp/metadata.php
tags:
- Identity Federation
- SAML
- SSO
- eduGAIN
- SURFconext
- NetID
properties:
- type: IdentityFederation
url: authentication/tu-delft-saml-idp-metadata.xml
- type: Metadata
url: https://login.tudelft.nl/sso/saml2/idp/metadata.php
- type: Authentication
url: authentication/tu-delft-authentication.yml
- type: Documentation
url: https://www.tudelft.nl/en/it-manuals/netid
- type: Federation
url: https://metadata.surfconext.nl/idps-metadata.xml
- aid: tu-delft:pure
name: Elsevier Pure research portal (TU Delft tenancy)
x-operator: tenant
x-operator-evidence: The API documentation served at https://pure.tudelft.nl/ws/api/ carries rel=canonical to https://api.elsevierpure.com/ws/api/index.html
— the contract is Elsevier's product documentation running under a TU Delft hostname. The institution-specific subdomain
makes this a tenancy, not an institutional API.
description: TU Delft runs an Elsevier Pure current research information system, exposed to the public as the research portal
at research.tudelft.nl / pure.tudelft.nl and to integrators as the Pure Web Service under /ws/api/ with a credential-gated
OAI-PMH interface at /ws/oai (HTTP 401 — the interface exists and is gated, not absent). RECORDED AS A RELATIONSHIP, NOT
A CONTRACT. The publications, people and project data are TU Delft's; the API surface that carries them is Elsevier's
product and belongs on Elsevier's own scorecard. No Pure specification is saved into this repository, and nothing is derived
from one. This entry exists so that a real institutional fact — TU Delft is a Pure customer — is on the record without
a vendor's contract being credited to the university.
humanURL: https://research.tudelft.nl/
baseURL: https://pure.tudelft.nl/ws
tags:
- Research Information
- CRIS
- Tenant
- Elsevier Pure
- Gated
properties:
- type: Website
url: https://research.tudelft.nl/
- type: Documentation
url: https://pure.tudelft.nl/ws/api/
- type: Authentication
url: authentication/tu-delft-authentication.yml
common:
- type: Website
url: https://www.tudelft.nl/
- type: LinkedIn
url: https://www.linkedin.com/school/tu-delft/
- type: GitHubOrganization
url: https://github.com/4TUResearchData
- type: SourceCode
url: https://github.com/4TUResearchData/djehuty
- type: Documentation
url: https://djehuty.4tu.nl/
- type: APIReference
url: https://djehuty.4tu.nl/
- type: OpenData
url: https://data.4tu.nl/
- type: ResearchRepository
url: https://repository.tudelft.nl/
- type: ResearchRepository
url: https://research.tudelft.nl/
- type: LibraryCatalog
url: https://tudelft.on.worldcat.org/discovery
- type: CourseCatalog
url: https://studiegids.tudelft.nl/
- type: IdentityFederation
url: https://login.tudelft.nl/sso/saml2/idp/metadata.php
- type: ResearchComputing
url: https://doc.dhpc.tudelft.nl/delftblue/
- type: AIPolicy
url: https://www.tudelft.nl/en/teaching-support/educational-advice/assess/guidelines/ai-chatbots-in-unsupervised-assessment
- type: AITooling
url: https://www.tudelft.nl/en/ai
- type: OpenCourseWare
url: https://ocw.tudelft.nl/
- type: Library
url: https://www.tudelft.nl/en/library/
- type: Blog
url: https://community.data.4tu.nl/
- type: Support
url: https://www.tudelft.nl/en/contact
- type: PrivacyPolicy
url: https://www.tudelft.nl/en/privacy-statement
- type: TermsOfService
url: https://data.4tu.nl/info/about-4turesearchdata/policies-guidelines
- type: SecurityTxt
url: https://www.tudelft.nl/.well-known/security.txt
- type: VulnerabilityDisclosure
url: security/tu-delft-vulnerability-disclosure.yml
- type: DomainSecurity
url: security/tu-delft-domain-security.yml
- type: Authentication
url: authentication/tu-delft-authentication.yml
- type: Scopes
url: scopes/tu-delft-scopes.yml
- type: Conformance
url: conformance/tu-delft-conformance.yml
- type: Lifecycle
url: lifecycle/tu-delft-lifecycle.yml
- type: Vocabulary
url: vocabulary/tu-delft-vocabulary.yml
- type: JSONLD
url: json-ld/tu-delft-context.jsonld
- type: Plans
url: plans/tu-delft-plans-pricing.yml
- type: RateLimits
url: rate-limits/tu-delft-rate-limits.yml
- type: FinOps
url: finops/tu-delft-finops.yml
- type: Review
url: review.yml
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
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