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FastX402 VAT Number Validation
x402
FastX402 VAT Number Validation is a paid API for AI agents from fastx402.tools, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-27).
Validates EU VAT numbers against the VIES system, returning company name, address, and validity status
Price / call$0.002
Success—
StatusUnknown
How this service works
200 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.
Output
A JSON object containing the validated VAT number, a boolean 'valid' flag, VIES status string (e.g. VALID/INVALID), company name, registered address, country code, format validity flag, data source (vies), and the timestamp of the request.
Example use cases
Invoice compliance check for EU supplier
“Before I pay this invoice, can you verify that the VAT number DE811193162 is valid and tell me the company name it belongs to?”
Onboarding new B2B customer
“We're onboarding a new French client who gave us VAT number FR40303265045 — can you confirm it's active in VIES and get their registered business name and address?”
Automated VAT validation in accounts payable
“I have a batch of vendor VAT numbers starting with this one: GB372098899 — can you check if it's valid and give me the VIES status and registered address?”
Technical details
Endpoint
GEThttps://fastx402.tools/vat-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need real-time VIES verification of EU VAT numbers, including Northern Ireland (XI prefix) and Greece (EL prefix), and want structured company data back without managing your own VIES integration. Prefer this over manual lookup when automating invoice processing, supplier onboarding, or compliance checks at $0.002 per call with no API key required.
Side effects
- Invalid or malformed VAT number format returns formatValid: false
- VAT number not found in VIES returns valid: false
- VIES service temporarily unavailable causing lookup failure
- Missing required 'vat' query parameter returns an error
- Country prefix mismatch or unsupported country code
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "GOOGLE IRELAND LIMITED",
"input": "IE6388047V",
"valid": true,
"source": "vies",
"address": "3RD FLOOR, GORDON HOUSE, BARROW STREET, DUBLIN 4",
"country": "IE",
"vatNumber": "IE6388047V",
"viesStatus": "VALID",
"formatValid": true,
"requestDate": "2026-10-17T16:06:14.436Z"
}
}Tags
x402
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