The playground

Try any of 1462 endpoints — live.

Pick an endpoint, load a working example, tweak the params, and send — no signup to try. Results render the way the data deserves; raw JSON, headers & code are one tab away.

Playground demo key · api.reefapi.com
post/kleinanzeigen/v1/filters1 credit

Live filter facets for a query/category from the search filter tree: category, location (state) and attribute facets, each with a result count — so you know which filter values are available and how many listings match.

Working example
Parameters
request preview
curl -X POST https://api.reefapi.com/kleinanzeigen/v1/filters \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"query":"iphone"}'

Hit Send to run this endpoint live.