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/geo-postal/v1/postal_search1 credit

country + city/place → its postal codes (zip-by-city); country + admin1 only → that state's codes (zip-by-state); country only → the country's states/regions list (GeoNames directory).

Working example
Parameters
request preview
curl -X POST https://api.reefapi.com/geo-postal/v1/postal_search \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"country":"DE","place":"München","limit":"10"}'

Hit Send to run this endpoint live.