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IBAN Check & Validation
x402
IBAN Check & Validation is a paid API for AI agents from flat-rate-llm.kikoribera03.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-30).
Validates a single IBAN offline, checking country code, length, MOD-97 check digits, SEPA membership, and extracting the BBAN — no network call required.
Price / call$0.005
Success—
StatusUnknown
How this service works
Validates one IBAN offline: country, expected length, ISO 7064 mod-97 check digits, whether it is inside SEPA, and the account number split out. Deterministic, no network call and no third party that can go down. Built for cleaning a list of accounts one at a time.
Output
Returns a JSON object with: the normalised IBAN, the pretty-formatted IBAN (with spaces), the BBAN (basic bank account number), the two-letter country code, boolean flags for overall validity, length validity, country code validity, and check digit validity, plus a boolean indicating SEPA membership.
Example use cases
Pre-payment IBAN sanity check
“Before we send the wire transfer, can you validate this IBAN for me — DE89 3704 0044 0532 0130 00 — and confirm it's a real German SEPA account?”
Cleaning a supplier bank account list
“I'm cleaning our supplier records. Can you verify whether this IBAN is valid and extract the underlying account number: FR76 3000 6000 0112 3456 7890 189?”
Catching a mistyped IBAN at checkout
“A customer entered 'NL91ABNA041710647' as their IBAN for a refund — can you check if it's valid and whether the check digits are correct?”
Technical details
Endpoint
GEThttps://flat-rate-llm.kikoribera03.workers.dev/v1/util/iban?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, offline, deterministic IBAN validation with no external dependencies — ideal for cleaning account lists, pre-validating payment inputs, or checking SEPA eligibility without relying on a third-party bank API that could be rate-limited or unavailable. Prefer it over live bank-lookup services when structural/format validation is sufficient and you do not need to confirm the account actually exists.
Side effects
- Malformed or empty IBAN string returns valid=false with individual flags identifying which component failed
- Unrecognised country code sets countryValid=false and sepa=false
- Correct-length IBAN with wrong check digits returns checkDigitsValid=false
- Endpoint unreachable or payment failure returns HTTP 402/5xx with no validation result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ibanrequired | string | The IBAN to check. Spaces and lowercase are accepted. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| bban | string | |
| iban | string | |
| sepa | boolean | |
| valid | boolean | |
| country | string | |
| formatted | string | |
| lengthValid | boolean | |
| countryValid | boolean | |
| checkDigitsValid | boolean |
Tags
x402
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