SWIFT Code Lookup API: Validate CHASUS33

A SWIFT code lookup API checks an 8- or 11-character BIC and returns the bank name, city, and country as JSON. On BankDataStack that is POST https://www.bankdatastack.com/api/v1/swift/validate with header X-API-Key. Official sample: CHASUS33.

Starter is $49.99/mo (1,000 calls, then $0.002) with a 7-day trial. This is not ABA routing and not IBAN. Docs: bankdatastack.com/docs.

Request: official CHASUS33

curl -X POST "https://www.bankdatastack.com/api/v1/swift/validate" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"swift":"CHASUS33"}'

Response: official validate sample

{
  "status": "success",
  "message": "SWIFT code CHASUS33 is valid",
  "data": {
    "swiftCode": "CHASUS33",
    "bank": "JPMORGAN CHASE BANK, N.A.",
    "city": "NEW YORK",
    "branch": "HEAD OFFICE",
    "address": "1 CHASE MANHATTAN PLAZA",
    "postCode": "10005",
    "country": "United States",
    "countryCode": "US",
    "breakdown": {
      "swiftCode": "CHASUS33",
      "bankCode": "CHAS",
      "countryCode": "US",
      "locationCode": "33",
      "codeStatus": "Active",
      "branchCode": null
    }
  }
}

PHP: official header

$ch = curl_init('https://www.bankdatastack.com/api/v1/swift/validate');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'X-API-Key: YOUR_API_KEY',
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS => json_encode(['swift' => 'CHASUS33']),
]);
$json = json_decode(curl_exec($ch), true);
curl_close($ch);
$bank = $json['data']['bank'] ?? null;

Go live

Validate a BIC with a BankData key →