openapi: 3.0.3
info:
  title: Flickr Activity URLs API
  description: 'The Flickr API exposes the photo, group, people, place, tag, gallery, and

    photoset capabilities that power flickr.com. Almost all flickr.com

    functionality is reachable through a single REST-like endpoint

    `https://api.flickr.com/services/rest` using a `method=flickr.{namespace}.{method}`

    query parameter and `format=json&nojsoncallback=1` for JSON output.


    This OpenAPI specification models a curated set of the most widely used

    methods across the Flickr API''s 250+ method namespaces (activity, auth,

    blogs, cameras, collections, commons, contacts, favorites, galleries,

    groups, groupsDiscuss, interestingness, machinetags, panda, people, photos,

    photos.geo, photos.licenses, photos.notes, photos.transform, photos.upload,

    photosets, places, prefs, profile, push, reflection, stats, tags, test, urls).


    Authentication is API key + OAuth 1.0a (HMAC-SHA1). Commercial use of the

    API requires prior permission from Flickr.

    '
  version: 1.0.0
  termsOfService: https://www.flickr.com/services/api/tos/
  contact:
    name: Flickr API Support
    url: https://www.flickr.com/help/api/
  license:
    name: Flickr API Terms of Use
    url: https://www.flickr.com/services/api/tos/
  x-generated-from: documentation
  x-last-validated: '2026-05-30'
servers:
- url: https://api.flickr.com/services
  description: Flickr REST API
- url: https://up.flickr.com/services
  description: Flickr Upload endpoint
security:
- ApiKeyAuth: []
- OAuth1:
  - read
  - write
  - delete
tags:
- name: URLs
  description: Look up Flickr URLs by user, group, gallery
paths:
  /rest/flickr.urls.lookupUser:
    get:
      operationId: urlsLookupUser
      summary: Look Up User By URL
      description: Returns a user NSID given the URL to a user's photos or profile.
      tags:
      - URLs
      parameters:
      - $ref: '#/components/parameters/ApiKey'
      - name: url
        in: query
        required: true
        schema:
          type: string
          format: uri
        example: https://www.flickr.com/photos/shutterbug/
      responses:
        '200':
          description: User
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UserUrlLookup'
              examples:
                UrlsLookupUser200Example:
                  summary: Default urlsLookupUser 200 response
                  x-microcks-default: true
                  value:
                    user:
                      id: '52345678901'
                      username:
                        _content: '100'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    UserUrlLookup:
      type: object
      properties:
        user:
          type: object
          properties:
            id:
              type: string
              example: '52345678901'
            username:
              type: object
              properties:
                _content:
                  type: string
                  example: '100'
  parameters:
    ApiKey:
      name: api_key
      in: query
      required: true
      description: Application API key.
      schema:
        type: string
      example: ab1234567890cdef1234567890abcd12
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: query
      name: api_key
      description: Application API key for non-authenticated and read-only public requests.
    OAuth1:
      type: oauth2
      description: 'Flickr uses OAuth 1.0a (HMAC-SHA1). The OpenAPI 3 schema cannot model

        OAuth 1.0a directly, so this entry approximates the flow. Token URLs:

        - Request token: https://www.flickr.com/services/oauth/request_token

        - Authorize:     https://www.flickr.com/services/oauth/authorize

        - Access token:  https://www.flickr.com/services/oauth/access_token

        '
      flows:
        authorizationCode:
          authorizationUrl: https://www.flickr.com/services/oauth/authorize
          tokenUrl: https://www.flickr.com/services/oauth/access_token
          scopes:
            read: Read access to private content owned by the user
            write: Modify content owned by the user
            delete: Delete content owned by the user