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ChainVerdict IBAN Validator
x402
ChainVerdict IBAN Validator is a paid API for AI agents from chainverdict.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates an IBAN structurally using country-specific length rules, character set checks, and the ISO 7064 mod-97 checksum algorithm
Price / call$0.001
Success—
StatusUnknown
How this service works
Validate an IBAN structurally: country length rules, character set and the ISO 7064 mod-97 check. Deterministic. A structurally valid IBAN is not proof the account exists, is open, or belongs to the party you are paying.
Output
Returns a structured validation result indicating whether the IBAN passes all structural checks: correct country-specific length, valid character set (alphanumeric, uppercase), and the ISO 7064 mod-97 checksum. Does not verify account existence, open status, or ownership — purely structural/deterministic.
Example use cases
Pre-payment IBAN sanity check
“Before I send this wire transfer, can you validate that DE89370400440532013000 is a properly formatted German IBAN with a valid checksum?”
Bulk vendor onboarding form validation
“A new supplier submitted their bank details with IBAN FR7630006000011234567890189 — can you verify it passes the ISO IBAN structural checks before I save it to our system?”
Fintech app input field validation
“A user entered NL91ABNA0417164300 as their bank account IBAN — is it structurally valid, correct length for the Netherlands, and does it pass the mod-97 check?”
Technical details
Endpoint
GEThttps://chainverdict.xyz/v1/validate/iban/:ibanWhen to prefer
Use this endpoint when you need a fast, cheap ($0.001), deterministic, stateless structural check of an IBAN before initiating a payment or storing bank details. Prefer this over bank-account-existence APIs when you only need format validation without a live bank lookup. Ideal as a pre-flight check in payment workflows, form validation pipelines, or fintech onboarding flows. For batch validation of multiple identifiers, consider the sibling bulk-validation endpoint.
Side effects
- Invalid IBAN format returns a validation failure with reason
- Missing or malformed country prefix causes check to fail
- IBAN with wrong length for stated country returns country-rule failure
- Non-alphanumeric characters cause character set validation failure
- Incorrect mod-97 checksum returns checksum failure even if format looks correct
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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