Batch Validate

Validate up to 100 IBANs in a single API call. Each IBAN is processed independently — one invalid IBAN does not affect the others. 60% cheaper than individual calls.

Endpoint

POST https://api.ibanforge.com/v1/iban/batch

Cost: $0.002 USDC per IBAN (e.g. 10 IBANs = $0.020, 100 IBANs = $0.200)

Request

Headers

| Header | Value | Required | |---|---|---| | Content-Type | application/json | Yes | | X-PAYMENT | x402 payment token | Yes |

Body

{
  "ibans": [
    "CH93 0076 2011 6238 5295 7",
    "DE89 3704 0044 0532 0130 00",
    "GB29 NWBK 6016 1331 9268 19",
    "INVALID123"
  ]
}

| Field | Type | Description | |---|---|---| | ibans | string[] | Array of IBANs to validate. 1 to 100 items. |

Response

Success (200)

{
  "results": [
    {
      "iban": "CH9300762011623852957",
      "valid": true,
      "country": { "code": "CH", "name": "Switzerland" },
      "check_digits": "93",
      "bban": { "bank_code": "00762", "account_number": "011623852957" },
      "bic": { "code": "UBSWCHZH", "bank_name": "UBS SWITZERLAND AG", "city": "ZURICH" },
      "sepa": { "member": true, "schemes": ["SCT", "SDD"], "vop_required": false },
      "issuer": { "type": "bank", "name": "UBS SWITZERLAND AG" },
      "risk_indicators": {
        "issuer_type": "bank",
        "country_risk": "standard",
        "test_bic": false,
        "sepa_reachable": true,
        "vop_coverage": false
      },
      "formatted": "CH93 0076 2011 6238 5295 7",
      "cost_usdc": 0.005
    },
    {
      "iban": "DE89370400440532013000",
      "valid": true,
      "country": { "code": "DE", "name": "Germany" },
      "check_digits": "89",
      "bban": { "bank_code": "37040044", "account_number": "0532013000" },
      "bic": { "code": "COBADEFF", "bank_name": "COMMERZBANK AG", "city": "FRANKFURT AM MAIN" },
      "sepa": { "member": true, "schemes": ["SCT", "SDD", "SCT_INST"], "vop_required": true },
      "issuer": { "type": "bank", "name": "COMMERZBANK AG" },
      "risk_indicators": {
        "issuer_type": "bank",
        "country_risk": "standard",
        "test_bic": false,
        "sepa_reachable": true,
        "vop_coverage": true
      },
      "formatted": "DE89 3704 0044 0532 0130 00",
      "cost_usdc": 0.005
    },
    {
      "iban": "INVALID123",
      "valid": false,
      "error": "invalid_format",
      "error_detail": "IBAN contains invalid characters. Only letters and digits are allowed.",
      "cost_usdc": 0.005
    }
  ],
  "count": 3,
  "valid_count": 2,
  "cost_usdc": 0.006,
  "processing_ms": 2.45
}

Response fields

Top-level:

| Field | Type | Description | |---|---|---| | results | array | Array of validation results, same order as input | | count | number | Total IBANs processed | | valid_count | number | Count of valid IBANs | | cost_usdc | number | Total cost for this batch | | processing_ms | number | Total processing time |

Each item in results has the same structure as the single validation response, including sepa, issuer, and risk_indicators for valid IBANs.

Errors

| Status | Code | Description | |---|---|---| | 400 | empty_batch | The ibans array is empty | | 400 | batch_too_large | More than 100 IBANs submitted | | 400 | invalid_request | Request body is not valid JSON or missing ibans field |

Code examples

cURL

curl -X POST https://api.ibanforge.com/v1/iban/batch \
  -H "Content-Type: application/json" \
  -d '{
    "ibans": [
      "CH9300762011623852957",
      "DE89370400440532013000",
      "FR7630006000011234567890189"
    ]
  }'

Python

import requests

response = requests.post(
    "https://api.ibanforge.com/v1/iban/batch",
    json={
        "ibans": [
            "CH9300762011623852957",
            "DE89370400440532013000",
            "FR7630006000011234567890189",
        ]
    },
)

data = response.json()
print(f"Valid: {data['valid_count']}/{data['count']}")

for result in data["results"]:
    if result["valid"]:
        risk = result["risk_indicators"]["country_risk"]
        issuer = result["issuer"]["type"]
        print(f"  {result['iban']} — {result['country']['name']} ({issuer}, risk: {risk})")
    else:
        print(f"  INVALID — {result['error_detail']}")

TypeScript

const response = await fetch(
  "https://api.ibanforge.com/v1/iban/batch",
  {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({
      ibans: [
        "CH9300762011623852957",
        "DE89370400440532013000",
        "FR7630006000011234567890189",
      ],
    }),
  }
);

const data = await response.json();
console.log(`Valid: ${data.valid_count}/${data.count}`);

for (const result of data.results) {
  if (result.valid) {
    console.log(`  ${result.iban} — ${result.issuer.type}, risk: ${result.risk_indicators.country_risk}`);
  } else {
    console.log(`  INVALID — ${result.error_detail}`);
  }
}