$0.0025
per call · USD Coin on Base
Validate an International Bank Account Number (IBAN) with full ISO 13616 checks: country-specific length and the ISO 7064 mod-97 checksum (not just a regex). Returns {valid, iban (normalized), formatted (4-char groups), countryCode, checkDigits, bban, reason}. Catches transposed digits and wrong-length accounts that a format check misses, and returns the canonical form so a glue/ETL pipeline can validate AND normalize bank details in one deterministic call. ~85 countries. No bank directory lookup — structure + checksum only.
Endpoint
GET https://2s.io/api/validate/iban2
Calls / 30d
1
Unique payers / 30d
Sep 9
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://2s.io/api/validate/iban", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://2s.io/api/validate/iban?iban=DE89370400440532013000" \
-H "X-PAYMENT: <signed x402 payment>"Payment details
0x2b6d4988db4723e6908db86ab2b8dfbc51fc32c5USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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