plans:
  - name: Free Public Access
    description: >-
      The DPLA API is entirely free to use for all developers. An API key
      is required for all requests and is issued at no cost via a self-service
      email registration endpoint. There are no paid tiers, subscription fees,
      or per-request charges. The API is funded as a public digital library
      service and is available to anyone for research, application development,
      and educational use.
    type: free
    url: https://pro.dp.la/developers/api-codex
    features:
      - Free API key registration via email
      - Full-text search across 50M+ cultural heritage item records
      - Field-specific queries on title, description, subject, creator, type, and more
      - Date range filtering (before/after)
      - Geographic search by city, state, and coordinate bounding boxes
      - Boolean operators (AND/OR) and wildcard (*) search
      - Paginated results up to 100 items per request
      - Batch item retrieval of up to 50 IDs per request
      - Faceted aggregation with up to 2,000 facet values
      - Date bucket facets by century, decade, year, month, or day
      - JSON-LD response format
      - JSONP callback support
      - Metadata from 4,000+ US libraries, archives, and museums