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/validate/v1/iban1 credit

Validate + parse an IBAN offline (ISO 13616 mod-97) → country, BBAN, bank/branch/account. Optional enrich=true adds BIC + bank name/city (openiban.com, proxied).

Working example
Parameters
request preview
curl -X POST https://api.reefapi.com/validate/v1/iban \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"iban":"DE89 3704 0044 0532 0130 00"}'

Hit Send to run this endpoint live.