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402utils Invoice-Ready Validator
x402
402utils Invoice-Ready Validator is a paid API for AI agents from 402utils.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Validates a SEPA invoice's VAT number (via VIES), IBAN, and ISO 11649 RF creditor reference in a single paid API call, returning per-field status and an overall validity summary.
Price / call$0.004
Success—
StatusUnknown
How this service works
Micro API utilities for AI agents, priced per call and paid in USDC over the x402 protocol. PDF, screenshot, OG-image and more — no signup, no keys.
Output
A JSON object with per-field validation results (valid/invalid/not-provided) for each of the VAT, IBAN, and RF reference, including the VIES-resolved company name for the VAT number. summary.allProvidedValid is true only if every supplied identifier passed. Optionally includes an Ed25519-signed attestation of the result for audit purposes. Returns HTTP 503 with no charge if all provided checks fail technically.
Example use cases
Example prompt
“Before I send this SEPA invoice, can you pre-flight all the identifiers: VAT number IE6388047V, IBAN DE89370400440532013000, and RF creditor reference RF18539007547034 — and give me a signed attestation I can keep for audit?”
Technical details
Endpoint
POSThttps://402utils.com/v1/invoice-readyWhen to prefer
Use this endpoint when you need to validate multiple SEPA invoice identifiers (VAT, IBAN, RF reference) in a single round-trip before issuing or processing a SEPA invoice. Prefer it over separate validation calls when you need a combined preflight check with an optional signed audit trail. Especially useful for automated invoicing pipelines, accounts payable automation, or compliance workflows requiring attestation.
Side effects
- 503 returned (no charge) if all provided identifiers fail technical validation (e.g. VIES unreachable, invalid IBAN checksum on all fields)
- Individual fields return invalid status if format is wrong (e.g. malformed IBAN, bad RF check digits)
- VAT lookup may fail if VIES service is temporarily down, reflected in per-field status
- Missing or malformed request body results in a 4xx error
- RF reference with incorrect ISO 11649 check digits will be flagged invalid
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| vat | string | Customer EU VAT number, e.g. IE6388047V. |
| iban | string | Payee IBAN. |
| attest | string | Set to 1 for an Ed25519-signed attestation of the result (audit trail). |
| rfReference | string | ISO 11649 RF creditor reference, e.g. RF18539007547034. |
Output
Schema · Response
{
"type": "json",
"example": {
"vat": {
"name": "GOOGLE IRELAND LIMITED",
"valid": true,
"status": "ok",
"vatNumber": "6388047V",
"countryCode": "IE"
},
"iban": {
"valid": true,
"status": "ok",
"country": "IE"
},
"summary": {
"checkedAt": "2026-07-05T12:00:00.000Z",
"allProvidedValid": true
},
"rfReference": {
"ref": "RF18539007547034",
"valid": true,
"status": "ok",
"formatted": "RF18 5390 0754 7034"
}
}
}Tags
x402
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