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402utils IBAN Validator
x402
402utils IBAN Validator is a paid API for AI agents from 402utils.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Validates an IBAN's structure and check digits (ISO 7064 mod-97) against per-country length/BBAN rules for ~90 countries, returning a bank/branch/account breakdown for FR, DE, ES, IT, BE, and NL.
Price / call$0.001
Success—
StatusUnknown
How this service works
Validate an IBAN structurally before you pay or store it: ISO 7064 mod-97 check digits plus the official per-country length and BBAN layout (~90 countries), returning the bank/branch/account breakdown for FR, DE, ES, IT, BE and NL. Structural validation only — no BIC directory lookup (SWIFT's BIC registry is proprietary) and no proof the account exists. Local, instant. ?attest=1 → Ed25519-signed.
Output
Returns a JSON object with: valid (boolean combining format + check digit checks), formatValid (country known and correct length/BBAN pattern), checkDigitsValid (ISO 7064 mod-97 result), country (ISO code), bban, length, and — for FR/DE/ES/IT/BE/NL — bankCode, branchCode, and accountNumber. With ?attest=1, includes an Ed25519 attestation object containing a signature, key ID, timestamp, and SHA-256 hash of the result for tamper-evident audit logs.
Example use cases
Pre-payment IBAN verification before wire transfer
“Before I send this wire transfer, can you quickly validate this IBAN for me: DE89370400440532013000? I need to make sure it's structurally correct and get me the bank and branch codes so I can double-check with our compliance team.”
Extract bank details from customer IBAN
“A customer just gave us their Italian IBAN for the direct deposit setup. Can you break down IT60X0542811101000000123456 and tell me which bank and branch it belongs to? I want to verify it matches what they told us before we process the payment.”
Cryptographically signed audit trail for financial records
“I need to validate this Spanish IBAN and get a signed attestation that proves we checked it at this exact moment: ES9121000418450200051332. Can you give me the attestation with a timestamp so we have an immutable record for our financial audit?”
Technical details
Endpoint
GEThttps://402utils.com/v1/iban-checkWhen to prefer
Use this endpoint when you need fast, local, offline-quality structural IBAN validation before initiating a payment or storing banking data — especially when you need a bank/branch code breakdown for major European countries (FR, DE, ES, IT, BE, NL) or require a cryptographically signed audit-trail attestation. It does not do live BIC lookup or confirm account existence, so pair with a live bank verification service when that is required.
Side effects
- Missing iban query parameter — returns error indicating required field
- IBAN from unsupported country — formatValid may be false or BBAN breakdown unavailable
- Malformed IBAN with wrong check digits — returns valid:false with checkDigitsValid:false
- IBAN with wrong length for its country — returns formatValid:false
- Network/service unavailability — HTTP 5xx response
- Invalid attest parameter value — attestation object may not be returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"bban": "30006000011234567890189",
"valid": true,
"length": 27,
"country": "FR",
"bankCode": "30006",
"branchCode": "00001",
"formatValid": true,
"accountNumber": "12345678901",
"checkDigitsValid": true
}
}Tags
x402
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