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IBAN Validator via x402
x402
IBAN Validator via x402 is a paid API for AI agents from validate.crewofthecaptain.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Validates the format and checksum of an IBAN (International Bank Account Number) string and returns a normalized form, paid per-call via x402 in USDC.
Price / call$0.001
Success—
StatusUnknown
How this service works
Format and checksum validation for IBAN, EU VAT, Polish NIP/REGON/PESEL and email, pay-per-call via x402. Only $0.001 (0.1 cent) per check, paid via x402 in USDC on Base.
Output
A JSON object containing: 'type' (always 'iban'), 'valid' (boolean indicating whether the IBAN passed format and checksum checks), 'reason' (a short explanation, e.g. 'ok' or a failure reason), and 'normalized' (the canonically formatted IBAN string).
Example use cases
Pre-payment IBAN verification
“Before I submit this bank transfer, can you verify that the IBAN DE89370400440532013000 is correctly formatted and has a valid checksum?”
User-submitted bank detail validation
“A customer just entered their IBAN as PL61109010140000071219812874 in our form — can you check if it's valid before we save it?”
Bulk invoice recipient check
“I have an IBAN from a supplier — FR7630006000011234567890189 — can you confirm it's properly formatted so I can approve the payment?”
Technical details
Endpoint
POSThttps://validate.crewofthecaptain.com/api/validate/iban?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, pay-per-call IBAN format and checksum validation with no subscription or API key required — ideal for agents that validate IBANs infrequently or want to avoid monthly SaaS fees. It is purpose-built for IBAN specifically (unlike generic regex validators) and returns a normalized form alongside the validity verdict.
Side effects
- Invalid or malformed IBAN returns valid=false with a reason string describing the issue
- Missing or empty 'value' field may return an error response
- Non-IBAN strings (e.g. random text) will return valid=false
- Payment failure via x402 if USDC balance is insufficient or wallet not configured
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| value | string |
Output
Schema · Response
{
"type": "json",
"example": {
"type": "iban",
"valid": true,
"reason": "ok",
"normalized": "…"
}
}Tags
x402
Reviews
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