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2s.io IBAN Validator
x402
2s.io IBAN Validator is a paid API for AI agents from 2s.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates an IBAN using full ISO 13616 country-length checks and ISO 7064 mod-97 checksum, returning normalized and formatted output with parsed components
Price / call$0.001
Success—
StatusUnknown
How this service works
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.
Output
Returns a JSON object with: valid (boolean), iban (normalized uppercase, spaces removed), formatted (grouped in blocks of 4), countryCode (2-letter ISO), checkDigits, bban (basic bank account number), and reason (error description if invalid)
Example use cases
Example prompt
“Can you validate this IBAN for me — GB29NWBK60161331926819 — and give me the normalized form and parsed components like country code and BBAN?”
Technical details
Endpoint
GEThttps://2s.io/api/validate/ibanWhen to prefer
Use this endpoint when you need strict ISO 13616 + ISO 7064 mod-97 checksum validation rather than a simple regex format check. Ideal for ETL pipelines, payment processors, or onboarding flows that need both validation and normalization in one call. Prefer over regex-only approaches when catching transposed digits or wrong-length accounts is critical. Not suitable if you also need bank name/BIC directory lookup — this is structure and checksum only.
Side effects
- IBAN fails mod-97 checksum: valid=false with reason explaining checksum mismatch
- Wrong length for country: valid=false with reason indicating expected vs actual length
- Unsupported country code: may return valid=false if country not in ~85 supported set
- Malformed input (non-alphanumeric after stripping spaces/hyphens): valid=false
- Missing required query parameter 'iban': HTTP 400 or error response
- Payment not attached or insufficient: HTTP 402 Payment Required
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"iban": "GB29 NWBK 6016 1331 9268 19"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"data": {
"ok": true,
"items": [
{
"bban": "NWBK60161331926819",
"iban": "GB29NWBK60161331926819",
"input": "GB29 NWBK 6016 1331 9268 19",
"valid": true,
"reason": null,
"formatted": "GB29 NWBK 6016 1331 9268 19",
"checkDigits": "29",
"countryCode": "GB"
}
],
"total": 1,
"source": {
"url": "https://2s.io",
"license": "No upstream license — computed by 2s.io",
"provider": "2s.io IBAN validator"
}
},
"meta": {
"cost": {
"usd": 0.001,
"tier": 0
},
"caller": "x402",
"version": null,
"endpoint": "validate.iban",
"settlement": {
"txHash": "0x901eb192dfa5701fd430ba6d75e2923b0b6241be722a61d57053b2a39acbeb7a",
"network": "eip155:8453",
"success": true
}
}
}Tags
x402
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