Smithsonian Institution Content API

openapi: 3.0.3
info:
  title: Smithsonian Open Access Content API
  description: The Smithsonian Open Access API provides programmatic access to the Smithsonian Institution's publicly available collection data. Search and retrieve objects, artworks, natural history specimens, and related media from 19 museums, 21 libraries, and 9 research centers. Requires an API key from api.data.gov.
  version: 1.0.0
  contact:
    name: Smithsonian Open Access
    url: https://www.si.edu/openaccess/devtools
    email: openaccess@si.edu
  license:
    name: Creative Commons Zero (CC0)
    url: https://creativecommons.org/publicdomain/zero/1.0/
servers:
- url: https://edan.si.edu/openaccess
  description: Smithsonian EDAN Open Access API
security:
- ApiKey: []
tags:
- name: Content
paths:
  /api/content:
    get:
      operationId: getContent
      summary: Get Content By ID
      description: Retrieves detailed content for a specific Smithsonian collection item by its unique identifier.
      tags:
      - Content
      parameters:
      - name: id
        in: query
        required: true
        description: The unique identifier of the content item
        schema:
          type: string
      - name: api_key
        in: query
        required: true
        description: API key obtained from api.data.gov
        schema:
          type: string
      responses:
        '200':
          description: Content item details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ContentItem'
        '400':
          description: Bad request - missing or invalid parameters
        '401':
          description: Unauthorized - invalid or missing API key
        '404':
          description: Content item not found
components:
  schemas:
    MediaItem:
      type: object
      description: A media item (image, video, audio) associated with a collection object
      properties:
        thumbnail:
          type: string
          format: uri
        idsId:
          type: string
        type:
          type: string
          enum:
          - Images
          - Videos
          - Audio
          - 3D Models
        content:
          type: string
          format: uri
        caption:
          type: string
    ContentItem:
      type: object
      description: A single Smithsonian collection item
      properties:
        id:
          type: string
          description: Unique identifier
        title:
          type: string
          description: Item title
        unitCode:
          type: string
          description: Smithsonian unit (museum/library) code
        type:
          type: string
          description: EDAN record type
        url:
          type: string
          format: uri
          description: URL to the item on si.edu
        content:
          type: object
          description: Full metadata content object
          properties:
            descriptiveNonRepeating:
              type: object
              description: Non-repeating descriptive metadata fields
              properties:
                title:
                  type: object
                  properties:
                    content:
                      type: string
                record_ID:
                  type: string
                unit_code:
                  type: string
                data_source:
                  type: string
                online_media:
                  type: object
                  properties:
                    media:
                      type: array
                      items:
                        $ref: '#/components/schemas/MediaItem'
            indexedStructured:
              type: object
              description: Structured and indexed metadata fields
              properties:
                object_type:
                  type: array
                  items:
                    type: string
                date:
                  type: array
                  items:
                    type: string
                place:
                  type: array
                  items:
                    type: string
                culture:
                  type: array
                  items:
                    type: string
                topic:
                  type: array
                  items:
                    type: string
            freetext:
              type: object
              description: Free-text metadata fields
              properties:
                physicalDescription:
                  type: array
                  items:
                    type: object
                setName:
                  type: array
                  items:
                    type: object
                creditLine:
                  type: array
                  items:
                    type: object
  securitySchemes:
    ApiKey:
      type: apiKey
      in: query
      name: api_key
      description: API key obtained by registering at api.data.gov