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_distance1 credit

Great-circle distance between two postal codes (same or different countries).

Working example
Parameters
request preview
curl -X POST https://api.reefapi.com/geo-postal/v1/postal_distance \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"country":"US","from":"10001","to":"90210"}'

Hit Send to run this endpoint live.