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IBAN Validator
x402
IBAN Validator is a paid API for AI agents from conclavex402p04.pythonanywhere.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-16).
Validates an IBAN by checking country code, length, and ISO 13616 mod-97 checksum, returning validity status, country, and check digits.
Price / call$0.005
Success—
StatusUnknown
How this service works
Validate an IBAN (international bank account number) — check the country, length and ISO 13616 mod-97 checksum; returns validity, country and check digits.
Output
Returns a JSON object with a boolean 'valid' field, the two-letter ISO country code extracted from the IBAN, the expected IBAN length for that country, and the two-digit check digits. For example: {valid: true, country: 'DE', iban_length: 22, check_digits: '89'}.
Example use cases
Pre-payment IBAN sanity check
“Before I send this wire transfer, can you confirm that GB29NWBK60161331926819 is a valid IBAN and tell me which country it's from?”
User-submitted bank detail verification
“A user on our platform just entered their bank account as FR7630006000011234567890189 — validate that IBAN for me before we save it.”
Bulk onboarding data audit
“I'm reviewing a new supplier's payment details. Can you validate their IBAN NL91ABNA0417164300 and confirm the check digits and country look right?”
Technical details
Endpoint
POSThttps://conclavex402p04.pythonanywhere.com/u/iban?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, deterministic structural and checksum validation of a single IBAN before initiating a payment or storing bank account details. It is ideal for pre-flight checks in payment workflows, form validation pipelines, or onboarding flows where you need to confirm country origin and checksum without connecting to a bank or payment network.
Side effects
- IBAN fails mod-97 checksum — returns valid: false
- Unsupported or unrecognized country code prefix — may return valid: false or error
- Incorrect IBAN length for the given country — returns valid: false
- Malformed input (non-alphanumeric characters) — returns validation error
- Missing or empty IBAN body field — returns 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true,
"country": "DE",
"iban_length": 22,
"check_digits": "89"
}
}Tags
x402
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