Verified
Financial Validation
Validate an IBAN (format + mod-97 checksum), read its country, and optionally check it against an expected country. One deterministic call, no bank-account verification.
Financial Validation is a stateless first-party utility for AI agents that handle payouts, invoices or onboarding forms: pass an IBAN and get back whether the format and mod-97 checksum are valid, which country the IBAN belongs to, and — if you supply expected_country — whether they match. It is a pure format/checksum/country check against a per-country IBAN length table; it does NOT verify that the account exists or belongs to anyone. Pay per request via x402 (X-Payment header); no API key needed from the caller.
Base URL
https://gateway.apiosk.com/financial-validation
Endpoints
POST
/iban-country-check
$0.05
Validate an IBAN's format and mod-97 checksum, derive its country code, and optionally compare it to an expected country. Format/checksum/country only — no bank-account verification.