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Open Data Proxy — IBAN Validation API
x402
Open Data Proxy — IBAN Validation API is a paid API for AI agents from cbs.thesoulnetwork.eu, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Validates an IBAN number and returns bank name, BIC, country, and checksum status for $0.01 USDC per call
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay $0.01 USDC per call to validate IBANs, EU VAT numbers and Dutch postcodes, and to query CBS housing, company, domain and EU sanctions data on Base Mainnet.
Output
Returns a JSON object with the validated IBAN string, whether it is valid (boolean), the BIC code, the bank name, the country of the account, and a checksum validity indicator (e.g. 'valid' or 'invalid').
Example use cases
Payment form IBAN validation
“Before we process this wire transfer, can you validate the IBAN NL91ABNA0417164300 and confirm which bank it belongs to and whether it's a legitimate account number?”
Supplier onboarding bank check
“We're onboarding a new supplier who gave us IBAN DE89370400440532013000 — can you verify it's valid and tell me the bank name and BIC?”
Fraud detection IBAN check
“Flag this suspicious IBAN GB29NWBK60161331926819 for review — first tell me if it's structurally valid and which country and bank it resolves to.”
Technical details
Endpoint
GEThttps://cbs.thesoulnetwork.eu/iban?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, pay-per-call IBAN validation without a subscription — ideal for low-volume or on-demand checks where you want to confirm a bank account number's structure, BIC, and issuing bank for EU/Dutch accounts. Prefer it over subscription-based IBAN validators when cost predictability at $0.01/call matters and you are already integrated with Base Mainnet x402 micropayments.
Side effects
- Invalid or malformed IBAN format returns valid:false with checksum error
- Missing 'value' query parameter results in 400 bad request
- Payment failure on Base Mainnet causes 402 Payment Required before any data is returned
- Non-existent or unknown IBAN country prefix may return partial data or unknown bank
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"bic": "ABNANL2A",
"bank": "ABN AMRO",
"iban": "NL91ABNA0417164300",
"valid": true,
"country": "Netherlands",
"checksum": "valid"
}
}Tags
x402
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