University of Tokyo

aid: university-of-tokyo
name: University of Tokyo
x-type: university
x-category: Public Research University
description: 'The University of Tokyo (東京大学, UTokyo) is Japan''s oldest and largest national research university, founded
  in 1877, and ranks 28th in the QS World University Rankings. Like almost every institution in this cohort it operates no
  developer program: there is no API key, no OAuth server, no course or student-information API, no status page, and no OpenAPI,
  AsyncAPI or GraphQL schema on any host it owns. What it does operate — entirely on its own domain, with no vendor tenancy
  anywhere in the picture — is library and digital-humanities infrastructure, and that infrastructure is real and standards-conformant
  rather than nominal. Two OAI-PMH 2.0 endpoints answer live: the UTokyo Repository (self-hosted WEKO3, 69,549 records, seven
  metadata formats including JPCOAR 2.0 and DDI Codebook) and the Academic Assets Archives Portal (1,957 sets, thirteen years
  of persistent-deletion metadata). The Archives Portal also serves IIIF Presentation 2.1 manifests, a IIIF Image API 2.0
  level2 service on iiif.dl.itc.u-tokyo.ac.jp, and DC-NDL item metadata as JSON-LD, CSV and refer/BibIX. The repository additionally
  exposes an undocumented but fully live JSON records interface. Beyond the library, the university operates three Shibboleth
  SAML 2.0 entities registered in GakuNin, Japan''s academic access federation — the identity layer is the largest piece of
  machine-readable engineering the institution actually owns, and it is the piece that never appears in an API catalog. Two
  honest caveats define this profile: the only API documentation the university publishes exists in Japanese only, so an English-language
  survey finds nothing here at all; and the documented search API returns HTTP 403 to every external automated client, so
  it is blocked rather than absent.'
type: Index
position: Consumer
access: 3rd-Party
accessModel:
  pricing: free
  onboarding: none
  trial: false
  try_now: false
  public: true
  label: Free
  confidence: high
  source:
  - probed
  generated: '2026-08-19'
  method: probed
  note: No credential exists to issue. Every institution-operated surface in this profile answered HTTP 200 with no Authorization
    header, no cookie and no registration. There is no plan, no quota and no commercial relationship on offer, and none is
    withheld.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/university-of-tokyo.png
url: https://raw.githubusercontent.com/api-evangelist/university-of-tokyo/refs/heads/main/apis.yml
tags:
- University
- Higher Education
- Education
- Japan
- Public Research University
- Research Data
- Research Repository
- Library
- Digital Archives
- Identity Federation
- IIIF
- OAI-PMH
- Open Access
- Metadata
created: '2026-06-03'
modified: '2026-08-19'
specificationVersion: '0.23'
x-coverage:
  state: covered
  reason: institution_operated_surfaces_verified
  detail: 'Every surface in this profile is operated by the University of Tokyo on a host under its own registrable domain
    u-tokyo.ac.jp, and every one was verified with a live probe on 2026-08-19. No vendor tenancy exists to record: u-tokyo.figshare.com
    and utokyo.figshare.com return HTTP 202 with a zero-byte body, utokyo.pure.elsevier.com 301s to a hostname that does not
    resolve, utokyo.instructure.com returns 404, and no Dataverse, Symplectic or Ex Libris tenant could be substantiated.
    This institution is one of the minority in the cohort that runs its own repository software rather than buying a hosted
    one, so the Figshare misattribution that defines this cohort simply does not apply here.

    Two limits on the coverage, both about the deployment rather than about the institution. First, the documented search
    API at /portal/search returned HTTP 403 to every external automated client tested — with a browser User-Agent, without
    one, and from two independent network paths — so its parameters are transcribed from the university''s documentation and
    could not be confirmed by response. Second, repository.dl.itc.u-tokyo.ac.jp returns HTTP 406 to browser-shaped User-Agents
    and 200 to plain clients, an inverted block that would make the host read as dead to any crawler applying the usual retry
    heuristic; it was probed correctly and is fully live.

    The June 2026 profile of this institution recorded two surfaces and missed the rest because it read the English help page,
    which says only "Only available in Japanese". The Japanese page at /portal/help/api carries the full parameter tables.
    Searching the local language is what moved this profile from two surfaces to five.'
  evidence:
  - url: https://repository.dl.itc.u-tokyo.ac.jp/oai?verb=Identify
    status: 200
  - url: https://repository.dl.itc.u-tokyo.ac.jp/oai?verb=ListMetadataFormats
    status: 200
  - url: https://repository.dl.itc.u-tokyo.ac.jp/api/records/
    status: 200
  - url: https://da.dl.itc.u-tokyo.ac.jp/portal/oai?verb=Identify
    status: 200
  - url: https://da.dl.itc.u-tokyo.ac.jp/portal/oai?verb=ListSets
    status: 200
  - url: https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
    status: 200
  - url: https://da.dl.itc.u-tokyo.ac.jp/portal/opensearch.xml
    status: 200
  - url: https://da.dl.itc.u-tokyo.ac.jp/portal/assets/fbd0479b-dbb4-4eaa-95b8-f27e1c423e4b?_format=json
    status: 200
  - url: https://da.dl.itc.u-tokyo.ac.jp/portal/repo/iiif/fbd0479b-dbb4-4eaa-95b8-f27e1c423e4b/manifest
    status: 200
  - url: https://iiif.dl.itc.u-tokyo.ac.jp/iiif/2/seishu%2FA00_5995%2F001%2FA00_5995_001_0001.tif/info.json
    status: 200
  - url: https://metadata.gakunin.nii.ac.jp/gakunin-metadata.xml
    status: 200
  - url: https://da.dl.itc.u-tokyo.ac.jp/portal/search?kywd=tokyo
    status: 403
  - url: https://www.u-tokyo.ac.jp/llms.txt
    status: 404
  - url: https://www.u-tokyo.ac.jp/.well-known/security.txt
    status: 404
  - url: https://u-tokyo.figshare.com/
    status: 202
  - url: https://utokyo.instructure.com/
    status: 404
apis:
- aid: university-of-tokyo:archives-portal
  name: UTokyo Academic Assets Archives Portal API
  x-operator: institution
  x-operator-evidence: da.dl.itc.u-tokyo.ac.jp is under the university's own registrable domain. Manifests carry attribution
    "東京大学総合図書館 General Library, The University of Tokyo, JAPAN" and a license pointing at lib.u-tokyo.ac.jp. No vendor host,
    title or contact appears anywhere.
  description: The one surface where the University of Tokyo publishes actual API documentation — at /portal/help/api, in
    Japanese only. It names a search API described as OpenSearch and a harvesting API described as OAI-PMH, and alongside
    them the portal serves item representations as JSON-LD (application/ld+json, DC-NDL vocabulary), CSV and refer/BibIX through
    a _format parameter. The search endpoint itself returns HTTP 403 to external automated clients even though its OpenSearch
    description document is served at 200; the item representations and manifests are open.
  humanURL: https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
  baseURL: https://da.dl.itc.u-tokyo.ac.jp/portal
  tags:
  - Digital Archives
  - Library
  - Metadata
  - Open Access
  - JSON-LD
  - OpenSearch
  - IIIF
  properties:
  - type: OpenAPI
    url: openapi/university-of-tokyo-archives-portal-openapi.yml
  - type: OpenAPI Source
    url: openapi/_original/university-of-tokyo-archives-portal-openapi.yml
  - type: Documentation
    url: https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
  - type: APIReference
    url: https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
  - type: Examples
    url: examples/university-of-tokyo-archives-item-jsonld.json
  - type: JSONLD
    url: json-ld/university-of-tokyo-context.jsonld
  - type: Vocabulary
    url: vocabulary/university-of-tokyo-vocabulary.yml
  - type: SourceCode
    url: https://github.com/utda
- aid: university-of-tokyo:iiif
  name: UTokyo IIIF Presentation and Image APIs
  x-operator: institution
  x-operator-evidence: iiif.dl.itc.u-tokyo.ac.jp and da.dl.itc.u-tokyo.ac.jp are both u-tokyo.ac.jp hosts. The Image API server
    serves the university's own logo at /images/ut-logo.jpg.
  description: IIIF Presentation API 2.1 manifests served from the Archives Portal and a IIIF Image API 2.0 level2 service
    on iiif.dl.itc.u-tokyo.ac.jp. The Image server declares formats tif/jpg/gif/png, qualities bitonal/default/gray/color,
    512x512 tiling with scale factors to 128, arbitrary rotation, CORS and canonical link headers. Manifests carry attribution,
    license, viewingDirection and cross-links to the item page, the item JSON-LD and the parent collection. This is the most
    standards-conformant surface the institution runs.
  humanURL: https://da.dl.itc.u-tokyo.ac.jp/portal/en
  baseURL: https://iiif.dl.itc.u-tokyo.ac.jp/iiif/2
  tags:
  - IIIF
  - Image
  - Digital Archives
  - Library
  - Cultural Heritage
  tags_raw:
  - IIIF
  - Images
  - Digital Archives
  - Library
  - Cultural Heritage
  properties:
  - type: OpenAPI
    url: openapi/university-of-tokyo-archives-portal-openapi.yml
  - type: Documentation
    url: https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
  - type: Examples
    url: examples/university-of-tokyo-iiif-presentation-manifest.json
  - type: Conformance
    url: conformance/university-of-tokyo-conformance.yml
  - type: SourceCode
    url: https://github.com/utda/mirador
- aid: university-of-tokyo:oai-pmh
  name: UTokyo OAI-PMH Metadata Harvesting
  x-operator: institution
  x-operator-evidence: Both endpoints are on u-tokyo.ac.jp hosts and both Identify responses name the University of Tokyo
    with a lib.u-tokyo.ac.jp admin contact (digilib@ and jitsumu_arch@).
  description: Two independent OAI-PMH 2.0 endpoints, both institution-operated. The UTokyo Repository at repository.dl.itc.u-tokyo.ac.jp/oai
    offers seven metadata formats (JPCOAR 2.0, JPCOAR 1.0, oai_dc, DDI Codebook 2.5, IEEE LOM) with earliest datestamp 2017-03-28
    and transient deletion records. The Archives Portal at da.dl.itc.u-tokyo.ac.jp/portal/oai offers five formats including
    DC-NDL, covers 1,957 sets, has an earliest datestamp of 2013-01-01 and persistent deletion records, and is documented
    by the university with full verb, parameter and resumptionToken paging tables. No key required.
  humanURL: https://www.lib.u-tokyo.ac.jp/en/library/contents/database/15
  baseURL: https://repository.dl.itc.u-tokyo.ac.jp/oai
  tags:
  - OAI-PMH
  - Repository
  - Metadata
  - Open Access
  - Library
  - Research Data
  - JPCOAR
  properties:
  - type: OpenAPI
    url: openapi/university-of-tokyo-oai-pmh-openapi.yml
  - type: OpenAPI Source
    url: openapi/_original/university-of-tokyo-oai-pmh-openapi.yml
  - type: Documentation
    url: https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
  - type: Examples
    url: examples/university-of-tokyo-repository-oai-identify.xml
  - type: Conformance
    url: conformance/university-of-tokyo-conformance.yml
  - type: Rules
    url: rules/university-of-tokyo-harvest-rules.yml
  - type: Authentication
    url: authentication/university-of-tokyo-authentication.yml
- aid: university-of-tokyo:repository-records
  name: UTokyo Repository Records API
  x-operator: institution
  x-operator-evidence: repository.dl.itc.u-tokyo.ac.jp is a u-tokyo.ac.jp host running WEKO3, the open-source repository platform
    NII publishes, installed and operated by the University of Tokyo Library System. It is self-hosted software, not a vendor
    tenancy — no vendor host, contact or brand appears in any response.
  description: A live, unauthenticated JSON records interface at /api/records/ exposing 69,549 repository records with full-text
    query, size/page paging and self/next links. Records carry JPCOAR-shaped metadata and a registered DOI under the university's
    own prefix 10.15083 via JaLC. The university documents this nowhere and its robots.txt disallows /api/, so it is recorded
    as an internal surface that happens to be reachable rather than as a product — but it is genuinely the institution's,
    genuinely live, and it is the largest machine-readable corpus the university serves.
  humanURL: https://repository.dl.itc.u-tokyo.ac.jp/
  baseURL: https://repository.dl.itc.u-tokyo.ac.jp/api
  tags:
  - Repository
  - Research Data
  - Open Access
  - Metadata
  - JPCOAR
  - Theses
  properties:
  - type: OpenAPI
    url: openapi/university-of-tokyo-repository-records-openapi.yml
  - type: OpenAPI Source
    url: openapi/_original/university-of-tokyo-repository-records-openapi.yml
  - type: JSONSchema
    url: json-schema/university-of-tokyo-repository-record.schema.json
  - type: Examples
    url: examples/university-of-tokyo-repository-records-list.json
  - type: ErrorCatalog
    url: errors/university-of-tokyo-error-handling.yml
  - type: Rules
    url: rules/university-of-tokyo-harvest-rules.yml
  - type: Lifecycle
    url: lifecycle/university-of-tokyo-lifecycle.yml
- aid: university-of-tokyo:gakunin-identity-federation
  name: UTokyo Identity Federation (GakuNin SAML 2.0)
  x-operator: institution
  x-operator-evidence: All three entityIDs are hosted under u-tokyo.ac.jp (gidp.adm., shibbi.pki.itc., step10.adm.s.) and
    each declares Organization Name "The University of Tokyo" / 東京大学. GakuNin is the federation that registers them, operated
    by the National Institute of Informatics; the identity providers themselves are the university's own Shibboleth deployments
    on the university's own hosts.
  description: 'The University of Tokyo operates three SAML 2.0 entities registered in GakuNin, Japan''s academic access federation
    — two Shibboleth Identity Providers (the central UTokyo IdP at gidp.adm.u-tokyo.ac.jp, and a research-collaboration IdP
    for KAGRA run by the Institute for Cosmic Ray Research) and one Service Provider, the STEP10 course registration system.
    Their metadata is published continuously in the GakuNin aggregate, which is machine-readable SAML metadata and is the
    institution''s largest genuinely-owned machine-readable artifact. It is also the closest thing to a registrar surface
    the university exposes: STEP10 is course registration, and it appears here as a federation entity rather than as an API.'
  humanURL: https://www.gakunin.jp/
  baseURL: https://gidp.adm.u-tokyo.ac.jp/idp/profile/SAML2/Redirect/SSO
  tags:
  - Identity Federation
  - SAML
  - Shibboleth
  - Single Sign-On
  - GakuNin
  - Research Infrastructure
  properties:
  - type: Authentication
    url: authentication/university-of-tokyo-authentication.yml
  - type: Examples
    url: examples/university-of-tokyo-gakunin-saml-metadata.xml
  - type: Conformance
    url: conformance/university-of-tokyo-conformance.yml
  - type: Documentation
    url: https://www.gakunin.jp/
common:
- type: Website
  url: https://www.u-tokyo.ac.jp/en/
- type: Documentation
  url: https://da.dl.itc.u-tokyo.ac.jp/portal/en/help/api
- type: APIReference
  url: https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
- type: TermsOfService
  url: https://www.u-tokyo.ac.jp/en/general/site_policy.html
- type: PrivacyPolicy
  url: https://www.u-tokyo.ac.jp/en/general/privacy_policy.html
- type: Support
  url: https://www.u-tokyo.ac.jp/en/general/contact.html
- type: Blog
  url: https://www.u-tokyo.ac.jp/focus/en/
- type: GitHubOrganization
  url: https://github.com/utda
- type: SourceCode
  url: https://github.com/utda/dataset
- type: LinkedIn
  url: https://www.linkedin.com/school/university-of-tokyo/
- type: License
  name: Reuse conditions of the General Library, The University of Tokyo
  url: https://www.lib.u-tokyo.ac.jp/ja/library/general/reuse
- type: ResearchRepository
  url: https://repository.dl.itc.u-tokyo.ac.jp/
- type: OpenData
  url: https://da.dl.itc.u-tokyo.ac.jp/portal/en/database/list
- type: LibraryCatalog
  url: https://opac.dl.itc.u-tokyo.ac.jp/
- type: CourseCatalog
  url: https://catalog.he.u-tokyo.ac.jp/
- type: IdentityFederation
  url: https://metadata.gakunin.nii.ac.jp/gakunin-metadata.xml
- type: ResearchComputing
  url: https://www.cc.u-tokyo.ac.jp/en/supercomputer/
- type: AIPolicy
  url: https://utelecon.adm.u-tokyo.ac.jp/en/docs/ai-tools-in-classes/
- type: AITooling
  url: https://utelecon.adm.u-tokyo.ac.jp/notice/2024/0327-ai-service/
- type: OpenAPI
  url: openapi/_original/university-of-tokyo-oai-pmh-openapi.yml
- type: JSONSchema
  url: json-schema/university-of-tokyo-repository-record.schema.json
- type: JSONLD
  url: json-ld/university-of-tokyo-context.jsonld
- type: Examples
  url: examples/university-of-tokyo-repository-records-list.json
- type: Authentication
  url: authentication/university-of-tokyo-authentication.yml
- type: OAuthScopes
  url: scopes/university-of-tokyo-scopes.yml
- type: Conformance
  url: conformance/university-of-tokyo-conformance.yml
- type: ErrorCatalog
  url: errors/university-of-tokyo-error-handling.yml
- type: Lifecycle
  url: lifecycle/university-of-tokyo-lifecycle.yml
- type: Vocabulary
  url: vocabulary/university-of-tokyo-vocabulary.yml
- type: Rules
  url: rules/university-of-tokyo-harvest-rules.yml
- type: DomainSecurity
  url: security/university-of-tokyo-domain-security.yml
- type: Plans
  url: plans/university-of-tokyo-plans-pricing.yml
- type: RateLimits
  url: rate-limits/university-of-tokyo-rate-limits.yml
- type: FinOps
  url: finops/university-of-tokyo-finops.yml
- type: Review
  url: review.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com