University of Tokyo Iiif API

openapi: 3.2.0
info:
  title: UTokyo Academic Assets Archives Portal Iiif API
  version: '2026-08-19'
  summary: Search, item-representation and IIIF interfaces of the University of Tokyo Academic Assets Archives Portal (東京大学学術資産等アーカイブズポータル).
  description: 'The Academic Assets Archives Portal is operated by the University of Tokyo Library System on

    the university''s own hosts.'
  contact:
    name: University of Tokyo Library System — Archives Portal
    email: jitsumu_arch@lib.u-tokyo.ac.jp
    url: https://da.dl.itc.u-tokyo.ac.jp/portal/en/contact
  license:
    name: Reuse conditions of the General Library, The University of Tokyo
    url: https://www.lib.u-tokyo.ac.jp/ja/library/general/reuse
servers:
- url: https://da.dl.itc.u-tokyo.ac.jp/portal
  description: Archives Portal. Institution-operated.
- url: https://iiif.dl.itc.u-tokyo.ac.jp
  description: IIIF Image API server. Institution-operated.
tags:
- name: IIIF
  description: IIIF Presentation and Image API endpoints.
paths:
  /repo/iiif/{assetId}/manifest:
    get:
      operationId: getIiifManifest
      summary: IIIF Presentation manifest for an item
      description: IIIF Presentation API 2.1 manifest (`@context` http://iiif.io/api/presentation/2/context.json, `@type` sc:Manifest). Carries label, attribution, license, logo, viewingDirection, `related` to the item page, `seeAlso` to the item JSON-LD, `within` to the parent collection, and a sequence of canvases whose images resolve against the IIIF Image API server.
      tags:
      - IIIF
      parameters:
      - name: assetId
        in: path
        required: true
        schema:
          type: string
          format: uuid
        example: fbd0479b-dbb4-4eaa-95b8-f27e1c423e4b
      responses:
        '200':
          description: IIIF Presentation 2.1 manifest.
          content:
            application/json:
              schema:
                type: object
              examples:
                manifest:
                  summary: 百鬼夜行図, captured live 2026-08-19
                  externalValue: ../examples/university-of-tokyo-iiif-presentation-manifest.json
  /iiif/2/{identifier}/info.json:
    servers:
    - url: https://iiif.dl.itc.u-tokyo.ac.jp
      description: IIIF Image API server. Institution-operated.
    get:
      operationId: getIiifImageInfo
      summary: IIIF Image API image information
      description: IIIF Image API 2.0 information request. The server declares `http://iiif.io/api/image/2/level2.json` compliance, formats tif/jpg/gif/png, qualities bitonal/default/gray/color, 512×512 tiles with scale factors to 128, and maxArea 151,301,008. Identifiers are URL-encoded file paths.
      tags:
      - IIIF
      parameters:
      - name: identifier
        in: path
        required: true
        description: URL-encoded image identifier.
        schema:
          type: string
        example: seishu%2FA00_5995%2F001%2FA00_5995_001_0001.tif
      responses:
        '200':
          description: IIIF Image API 2.0 image information document.
          content:
            application/ld+json:
              schema:
                type: object
              examples:
                info:
                  summary: Captured live 2026-08-19
                  externalValue: ../examples/university-of-tokyo-iiif-image-info.json
  /iiif/2/{identifier}/{region}/{size}/{rotation}/{quality}.{format}:
    servers:
    - url: https://iiif.dl.itc.u-tokyo.ac.jp
      description: IIIF Image API server. Institution-operated.
    get:
      operationId: getIiifImage
      summary: IIIF Image API image request
      description: IIIF Image API 2.0 level 2 image delivery.
      tags:
      - IIIF
      parameters:
      - name: identifier
        in: path
        required: true
        schema:
          type: string
      - name: region
        in: path
        required: true
        schema:
          type: string
        example: full
      - name: size
        in: path
        required: true
        schema:
          type: string
        example: '!220,220'
      - name: rotation
        in: path
        required: true
        schema:
          type: string
        example: '0'
      - name: quality
        in: path
        required: true
        schema:
          type: string
          enum:
          - bitonal
          - default
          - gray
          - color
      - name: format
        in: path
        required: true
        schema:
          type: string
          enum:
          - tif
          - jpg
          - gif
          - png
      responses:
        '200':
          description: The derivative image.
          content:
            image/jpeg:
              schema:
                type: string
                format: binary
externalDocs:
  description: APIについて — the portal's own API documentation (Japanese only)
  url: https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
x-operator: institution
x-operator-evidence: da.dl.itc.u-tokyo.ac.jp and iiif.dl.itc.u-tokyo.ac.jp are both under u-tokyo.ac.jp. The IIIF manifests carry attribution "東京大学総合図書館 General Library, The University of Tokyo, JAPAN", a logo on iiif.dl.itc.u-tokyo.ac.jp and a license pointing at lib.u-tokyo.ac.jp. No vendor host, title or contact is present anywhere in the surface.
x-provenance:
  generated: '2026-08-19'
  method: probed
  source:
  - https://da.dl.itc.u-tokyo.ac.jp/portal/help/api
  - https://da.dl.itc.u-tokyo.ac.jp/portal/opensearch.xml
  - https://da.dl.itc.u-tokyo.ac.jp/portal/search?kywd=tokyo
  - https://da.dl.itc.u-tokyo.ac.jp/portal/assets/fbd0479b-dbb4-4eaa-95b8-f27e1c423e4b?_format=json
  - https://da.dl.itc.u-tokyo.ac.jp/portal/repo/iiif/fbd0479b-dbb4-4eaa-95b8-f27e1c423e4b/manifest
  - https://iiif.dl.itc.u-tokyo.ac.jp/iiif/2/seishu%2FA00_5995%2F001%2FA00_5995_001_0001.tif/info.json
  note: Parameters and formats transcribed from the university's own Japanese documentation page, then probed live. Where documentation and observed behaviour disagree, both are recorded.