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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 2026-09-15).
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
60 paid endpoints with no metering, no API key and no account. Each endpoint has one flat price per call, whatever the size of the request: LLM completions with automatic failover across several large models, read-only EVM tooling over Base, Ethereum, Polygon, Arbitrum and Optimism, and pure crypto utilities that touch no network.
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
POSThttps://flat-rate-llm.kikoribera03.workers.dev/v1/util/ibanWhen 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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