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Playground demo key · api.reefapi.com
post/books/v1/subjects1 credit

browse a subject / genre / theme → ranked work cards PLUS facets (top authors, publishers, related subjects, people, places, time-periods) and work_count/ebook_count; optional ebooks-only and published_in year-range filters; page/limit pagination

Working example
Parameters
request preview
curl -X POST https://api.reefapi.com/books/v1/subjects \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"subject":"fantasy","limit":"5"}'

Hit Send to run this endpoint live.

Playground · ReefAPI