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Irish VAT Number Validation via EU VIES
x402
Irish VAT Number Validation via EU VIES is a paid API for AI agents from supplier-payment-verifier-production.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Validates an Irish VAT number's format and check letter, then verifies it live against the EU VIES registry, returning PASSED, FAILED, or UNAVAILABLE with a reason code and audit receipt.
Price / call$0.01
Success—
StatusUnknown
How this service works
Validates the Irish VAT number format and check letter, then confirms registration live with EU VIES. Returns PASSED, FAILED or UNAVAILABLE (VIES outage) with a reason code.
Output
A JSON object containing: the check type (VIES_VAT), outcome (PASSED, FAILED, or UNAVAILABLE if VIES is down), the UTC timestamp of the check, a machine-readable reason_code (e.g. VAT_VALID), and an agent_audit_receipt with a key ID, VIES timestamp, Ed25519 agent signature over the response, and a SHA-256 hash of the raw VIES response for tamper-evident auditing. A consultation_number is included when available from VIES.
Example use cases
Pre-payment supplier VAT check
“I've got an invoice from an Irish company claiming VAT number IE6388047V — can you verify that number is actually registered on VIES before I approve the payment?”
Onboarding new Irish vendor
“We're adding a new Irish supplier to our vendor list; their declared VAT number is IE8256625E — please check the format and confirm it's live on the EU VIES registry.”
Finance audit compliance review
“Our auditors need us to re-validate VAT numbers for all Irish suppliers — start with IE9S99999L and tell me whether it passed or failed VIES verification, including the reason code.”
Technical details
Endpoint
POSThttps://supplier-payment-verifier-production.up.railway.app/v1/checks/vat?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need to validate an Irish VAT number (with or without the IE prefix) against the live EU VIES registry, and require a tamper-evident audit receipt with an Ed25519 signature. It is ideal for automated accounts-payable agents that must log cryptographic proof of VAT checks before approving supplier payments. Prefer it over generic VAT lookup tools when Irish-specific format validation (including check-letter verification) plus live VIES confirmation in a single call is needed.
Side effects
- FAILED outcome with reason_code indicating invalid format or failed check-letter calculation if the VAT number is malformed
- UNAVAILABLE outcome when VIES is experiencing an outage or is temporarily unreachable
- Payment required (HTTP 402) if the x402 micropayment header is missing or invalid
- Input validation error if vat_number is missing, too short, or exceeds 20 characters
- Network timeout if the VIES service takes too long to respond
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| vat_number | string | Irish VAT number, with or without the IE prefix. |
Output
Schema · Response
{
"type": "json",
"example": {
"check": "VIES_VAT",
"outcome": "PASSED",
"checked_at": "2026-10-15T12:00:00Z",
"reason_code": "VAT_VALID",
"agent_audit_receipt": {
"key_id": "<id>",
"vies_timestamp": "2026-10-15T12:00:00Z",
"agent_signature": "<base64 Ed25519>",
"raw_response_hash": "<sha256 hex>"
},
"consultation_number": null
}
}Tags
x402
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