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Agent402 IBAN Validator
x402
Agent402 IBAN Validator is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status down (last checked 2026-09-14).
Validates an IBAN's structure offline using ISO 13616 length rules and mod-97 checksum, returning a canonical electronic-format string for SEPA/payout use.
Price / call$0.001
Success—
StatusDown
How this service works
Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.
Output
A JSON object with a boolean 'valid' field, a 'country' field (ISO 2-letter code extracted from the IBAN), and an 'electronic' field containing the space-free canonical IBAN string. Note: this is a structural/checksum check only — it does not verify that the account exists, confirm a bank name, or resolve a BIC.
Example use cases
Gate payout on IBAN validity
“I'm about to send a wire transfer to GB82WEST12345698765432 — can you validate that IBAN and confirm it passes the checksum before I submit the payment?”
Normalize user-submitted IBAN
“A user just entered 'GB82 WEST 1234 5698 7654 32' in our payment form — validate it and give me the canonical electronic format I should store in the database.”
Bulk onboarding pre-check
“We're onboarding a new supplier with bank account DE89370400440532013000 — validate that IBAN before we add it to our payout system so we don't get a failed transfer.”
Technical details
Endpoint
POSThttps://agent402.co.uk/v1/validate/ibanWhen to prefer
Use this endpoint when you need a fast, offline structural validation of an IBAN before executing a payment or storing account details — it's ideal as a pre-transfer gate in agentic payout workflows. Prefer it over LLM-based guessing (which can hallucinate) and over full bank-lookup APIs when you only need format and checksum correctness. Not suitable when you need to verify account existence, resolve a BIC, or look up a bank name.
Side effects
- Invalid IBAN format returns valid:false with no electronic field
- Malformed or too-short input may return a 400 error
- Country code not in ISO 13616 registry will fail validation
- Mod-97 checksum mismatch returns valid:false
- Network or service unavailability returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| iban | string | IBAN (spaces ok); e.g. GB82WEST12345698765432 |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true,
"country": "GB",
"electronic": "GB82WEST12345698765432"
}
}Tags
x402
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