Nanyang Technological University (NTU Singapore) is an autonomous public research university in Singapore, ranked in the top 15 of the QS World University Rankings. Its programmable footprint is small, indirect, and almost entirely research-infrastructure: NTU operates no public developer portal, publishes no API key self-service, and exposes no OAuth or OIDC authorization server on any host it owns. Exactly one machine-readable API is genuinely NTU-operated — DR-NTU (Data), a Dataverse 6.1 open research data repository that NTU self-hosts on its own network (researchdata.ntu.edu.sg CNAMEs to dataverse.ntu.edu.sg at 155.69.19.238, registered to Nanyang Technological University), backed by NTU's own DataCite client GDCC.NTU with 3,625 DOIs under prefix 10.21979. Everything else that carries NTU's name is a tenancy on someone else's platform. DR-NTU (Digital Repository), the far larger surface with 158,100 research profiles, a DSpace 7 REST API and a fully conformant OAI-PMH endpoint, answers on dr.ntu.edu.sg but CNAMEs to ntu-cris.4science.cloud — NTU's data and NTU's library administration running on 4Science's DSpace-CRIS platform. NTU's federated single sign-on is a live SAML 2.0 identity provider in eduGAIN, but the entityID and endpoints sit on SingAREN's SGAF proxy, not on ntu.edu.sg. NTU owns a live API gateway at api.ntu.edu.sg which returns a structured JSON 404 on every path and documents no route at all. This profile records the tenancies as the real institutional facts they are, and credits NTU only for what NTU actually operates.
Nanyang Technological University publishes 1 API on the APIs.io network: DR-NTU (Data) — Dataverse API. Tagged areas include University, Higher Education, Education, Singapore, and Public Research University.
The Nanyang Technological University catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.
Nanyang Technological University’s developer surface includes documentation, support, engineering blog, and 24 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/.
NTU's institutional open research data repository, running Dataverse 6.1 self-hosted on NTU's own network. The publicly documented, unauthenticated read subset covers dataset se...
NTU's institutional publications and research-profile repository — 158,100 research profiles, records back to 2008 — served from NTU's own hostname but operated on 4Science's DS...
A fully conformant OAI-PMH 2.0 metadata harvesting endpoint over DR-NTU, serving 11 metadata formats and declaring OpenAIRE CERIF-CRIS 1.1 compatibility on a second base URL. Ad...
NTU's SAML 2.0 identity provider, registered in the Singapore Access Federation (SGAF) by SingAREN and interfederated into eduGAIN, asserting the scope ntu.edu.sg. Live machine-...
aid: ntu
name: Nanyang Technological University
x-type: university
x-category: Public Research University
description: 'Nanyang Technological University (NTU Singapore) is an autonomous public research university in Singapore, ranked
in the top 15 of the QS World University Rankings. Its programmable footprint is small, indirect, and almost entirely research-infrastructure:
NTU operates no public developer portal, publishes no API key self-service, and exposes no OAuth or OIDC authorization server
on any host it owns. Exactly one machine-readable API is genuinely NTU-operated — DR-NTU (Data), a Dataverse 6.1 open research
data repository that NTU self-hosts on its own network (researchdata.ntu.edu.sg CNAMEs to dataverse.ntu.edu.sg at 155.69.19.238,
registered to Nanyang Technological University), backed by NTU''s own DataCite client GDCC.NTU with 3,625 DOIs under prefix
10.21979. Everything else that carries NTU''s name is a tenancy on someone else''s platform. DR-NTU (Digital Repository),
the far larger surface with 158,100 research profiles, a DSpace 7 REST API and a fully conformant OAI-PMH endpoint, answers
on dr.ntu.edu.sg but CNAMEs to ntu-cris.4science.cloud — NTU''s data and NTU''s library administration running on 4Science''s
DSpace-CRIS platform. NTU''s federated single sign-on is a live SAML 2.0 identity provider in eduGAIN, but the entityID
and endpoints sit on SingAREN''s SGAF proxy, not on ntu.edu.sg. NTU owns a live API gateway at api.ntu.edu.sg which returns
a structured JSON 404 on every path and documents no route at all. This profile records the tenancies as the real institutional
facts they are, and credits NTU only for what NTU actually operates.'
type: Index
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: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/ntu.png
url: https://raw.githubusercontent.com/api-evangelist/ntu/refs/heads/main/apis.yml
tags:
- University
- Higher Education
- Education
- Singapore
- Public Research University
- Research Data
- Research Repository
- Identity Federation
- Open Access
- Course Catalog
- Library
- OAI-PMH
tags_country: Singapore
created: '2026-06-03'
modified: '2026-08-19'
specificationVersion: '0.23'
x-coverage:
state: unreadable
reason: 'The single institution-operated API in this profile is behind an edge bot-management gate that returns 403 to every
automated client, so its contract could not be re-read on this run. The profile is otherwise thin because NTU genuinely
publishes very little: no developer portal, no API documentation of its own, and no institution-operated API beyond its
research data repository.'
detail: 'researchdata.ntu.edu.sg (DR-NTU (Data), the one x-operator: institution surface) returns an Apache 403 with a Citrix
bot-management cookie and a /trap.html honeypot link on EVERY path, including the site root and robots.txt. Retrying with
a browser User-Agent and a persisted cookie jar did not clear it. This is a block on us, not a decommissioned service:
NTU''s DataCite client minted a DOI on 2026-08-17, two days before this profile, and re3data independently lists the REST,
OAI-PMH and SWORD endpoints as current. The archived contract in openapi/_original/ntu-drntu-data.yaml is therefore retained
and the two refined specs kept, but marked unverified in authentication/ and errors/. A re-probe from a different vantage
should upgrade this to covered. Every other surface WAS read live: dr.ntu.edu.sg answered 200 on /server/api and on OAI-PMH
Identify and ListMetadataFormats, the SGAF SAML metadata returned 200 application/samlmetadata+xml, and eduGAIN, DataCite
and re3data all answered. Four of the six OpenAPIs previously in this repo were removed: refine-openapis had merged three
source specs spanning two different hosts by tag and stamped all six with the first spec''s server, so the DSpace paths
(/, /core/items/{uuid}, /discover/search/objects) and the OAI-PMH /request path were all asserting researchdata.ntu.edu.sg
as their host, which never served them.'
evidence:
- url: https://researchdata.ntu.edu.sg/api/info/version
status: 403
- url: https://researchdata.ntu.edu.sg/robots.txt
status: 403
- url: https://api.datacite.org/dois?client-id=gdcc.ntu
status: 200
- url: https://www.re3data.org/api/v1/repository/r3d100012440
status: 200
- url: https://dr.ntu.edu.sg/server/api
status: 200
- url: https://dr.ntu.edu.sg/oai/request?verb=Identify
status: 200
- url: https://ntu-entra.singaren.net.sg/simplesaml/saml2/idp/metadata.php
status: 200
- url: https://api.ntu.edu.sg/
status: 404
- url: https://www.ntu.edu.sg/
status: 200
apis:
- aid: ntu:ntu-drntu-data
name: DR-NTU (Data) — Dataverse API
description: NTU's institutional open research data repository, running Dataverse 6.1 self-hosted on NTU's own network.
The publicly documented, unauthenticated read subset covers dataset search and the platform version endpoint. Deposit
and restricted-file access require an X-Dataverse-key token issued through an NTU account. This is the only API in this
profile that NTU actually operates.
x-operator: institution
x-operator-evidence: researchdata.ntu.edu.sg CNAME -> dataverse.ntu.edu.sg -> 155.69.19.238; whois netname NTUNET1, org-name
"Nanyang Technological University", country SG. Not a vendor-hosted tenancy.
humanURL: https://libguides.ntu.edu.sg/drntudataguidespolicies/APITermsOfUse
baseURL: https://researchdata.ntu.edu.sg/api
tags:
- Research Data
- Repository
- Dataverse
properties:
- type: OpenAPI
url: openapi/ntu-search-api-openapi.yml
- type: OpenAPI
url: openapi/ntu-info-api-openapi.yml
- type: Documentation
url: https://libguides.ntu.edu.sg/drntudataguidespolicies/APITermsOfUse
- type: Documentation
url: https://guides.dataverse.org/en/latest/api/
- type: Website
url: https://www.re3data.org/repository/r3d100012440
- type: x-json-schema
url: json-schema/ntu-dataset-schema.json
- type: x-example
url: examples/ntu-search-example.json
- type: x-postman-collection
url: collections/ntu-search-api.postman_collection.json
- aid: ntu:ntu-drntu-repository
name: DR-NTU (Digital Repository) — DSpace-CRIS REST API
description: 'NTU''s institutional publications and research-profile repository — 158,100 research profiles, records back
to 2008 — served from NTU''s own hostname but operated on 4Science''s DSpace-CRIS platform. Recorded here as a tenant
relationship because the repository, the data and the library administration are NTU''s while the platform and the REST
contract are the vendor''s. No OpenAPI is registered under NTU for this surface: the DSpace 7 contract belongs in the
platform''s own catalog entry, not in NTU''s.'
x-operator: tenant
x-operator-evidence: 'dr.ntu.edu.sg CNAME -> ntu-cris.4science.cloud. /server/api self-reports "dspaceVersion": "DSpace
7.6.3", "crisVersion": "cris-2023.02.07", and the archived contract points to wiki.lyrasis.org for the full REST specification.'
humanURL: https://dr.ntu.edu.sg/home
baseURL: https://dr.ntu.edu.sg/server/api
tags:
- Research Repository
- Institutional Repository
- DSpace
- CRIS
properties:
- type: Documentation
url: https://wiki.lyrasis.org/display/DSDOC7x/REST+API
- type: x-json-schema
url: json-schema/ntu-item-schema.json
- type: x-example
url: examples/ntu-discover-example.json
- type: x-archived-contract
url: openapi/_original/ntu-drntu-repo-rest.yaml
- aid: ntu:ntu-drntu-repository-oai
name: DR-NTU (Digital Repository) — OAI-PMH
description: A fully conformant OAI-PMH 2.0 metadata harvesting endpoint over DR-NTU, serving 11 metadata formats and declaring
OpenAIRE CERIF-CRIS 1.1 compatibility on a second base URL. Administered by NTU Library (library@ntu.edu.sg) with an earliest
datestamp of 2008-05-15, but implemented and operated by the DSpace-CRIS platform on 4Science infrastructure. Verified
live 2026-08-19.
x-operator: tenant
x-operator-evidence: 'Same host as the DSpace REST surface: dr.ntu.edu.sg CNAME -> ntu-cris.4science.cloud. Identify reports
baseURL https://dr.ntu.edu.sg/server/oai/request, repositoryIdentifier dr.ntu.edu.sg.'
humanURL: https://dr.ntu.edu.sg/home
baseURL: https://dr.ntu.edu.sg/server/oai/request
tags:
- OAI-PMH
- Metadata Harvesting
- Open Access
properties:
- type: Documentation
url: https://www.openarchives.org/OAI/openarchivesprotocol.html
- type: x-conformance
url: conformance/ntu-conformance.yml
- type: x-archived-contract
url: openapi/_original/ntu-drntu-repo-oai.yaml
- aid: ntu:ntu-identity-federation
name: NTU Identity Provider — SGAF / eduGAIN
description: NTU's SAML 2.0 identity provider, registered in the Singapore Access Federation (SGAF) by SingAREN and interfederated
into eduGAIN, asserting the scope ntu.edu.sg. Live machine-readable SAML metadata with an IDPSSODescriptor and an AttributeAuthorityDescriptor.
This is the surface class universities operate that almost never gets catalogued, and it is a genuine institutional fact
— but the entityID and endpoints are on SingAREN's federation proxy, not on ntu.edu.sg, so it is recorded as a tenancy
rather than as NTU-operated infrastructure.
x-operator: tenant
x-operator-evidence: eduGAIN entity 879352, federation code SGAF, registration authority https://www.singaren.net.sg, scope
"ntu-entra.singaren.net.sg==ntu.edu.sg". The metadata signing certificate is issued to SingAREN (CN sgaf.singaren.net.sg).
A superseded entity 879351 is still published, labelled "Legacy AD FS - DO NOT USE".
humanURL: https://technical.edugain.org/entities
baseURL: https://ntu-entra.singaren.net.sg/simplesaml/saml2/idp/metadata.php
tags:
- Identity Federation
- SAML
- Shibboleth
- eduGAIN
properties:
- type: x-saml-metadata
url: https://ntu-entra.singaren.net.sg/simplesaml/saml2/idp/metadata.php
- type: x-conformance
url: conformance/ntu-conformance.yml
- type: x-authentication
url: authentication/ntu-authentication.yml
common:
- type: Website
url: https://www.ntu.edu.sg/
- type: Documentation
url: https://libguides.ntu.edu.sg/drntudataguidespolicies/APITermsOfUse
- type: TermsOfService
url: https://www.ntu.edu.sg/legal/terms-of-use
- type: PrivacyPolicy
url: https://www.ntu.edu.sg/legal/privacy-statement
- type: Support
url: https://www.ntu.edu.sg/life-at-ntu/internet-account-and-policy/contact-service-desk
- type: Blog
url: https://blogs.ntu.edu.sg/
- type: GitHubOrganization
url: https://github.com/NTUsg
- type: LinkedIn
url: https://www.linkedin.com/school/nanyang-technological-university/
- type: ResearchRepository
url: https://www.re3data.org/repository/r3d100012440
- type: CourseCatalog
url: https://wis.ntu.edu.sg/webexe/owa/aus_subj_cont.main
- type: IdentityFederation
url: https://ntu-entra.singaren.net.sg/simplesaml/saml2/idp/metadata.php
- type: AIPolicy
url: https://www.ntu.edu.sg/research/resources/use-of-gai-in-research
- type: AITooling
url: https://libguides.ntu.edu.sg/responsible-ai-use/
- type: AgenticAccess
url: agentic-access/ntu-agentic-access.yml
- type: DomainSecurity
url: security/ntu-domain-security.yml
- type: Plans
url: plans/ntu-plans-pricing.yml
- type: RateLimits
url: rate-limits/ntu-rate-limits.yml
- type: FinOps
url: finops/ntu-finops.yml
- type: Review
url: review.yml
- type: x-conformance
url: conformance/ntu-conformance.yml
- type: x-authentication
url: authentication/ntu-authentication.yml
- type: x-scopes
url: scopes/ntu-scopes.yml
- type: x-errors
url: errors/ntu-errors.yml
- type: x-lifecycle
url: lifecycle/ntu-lifecycle.yml
- type: x-vocabulary
url: vocabulary/ntu-vocabulary.yml
- type: x-spectral-rules
url: rules/ntu-rules.yml
- type: x-json-ld-context
url: json-ld/ntu-context.jsonld
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
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