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EU VAT Number Check
x402
EU VAT Number Check is a paid API for AI agents from api.facts402.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).
Validates an EU VAT number via offline format/check-digit test and a live VIES lookup, returning registration status, company name, and address.
Price / call$0.01
Success—
StatusUnknown
How this service works
Use when an agent needs EU VAT number validation for B2B invoicing, KYB or onboarding: offline format and check-digit test plus a live European Commission VIES lookup returning registration status, company name and address. Busy or offline member states return 503 and are not charged. $0.01 USDC on Base; charged only on 2xx, never for invalid input.
Output
Returns whether the VAT number passes offline format and check-digit validation, its live VIES registration status (active/inactive), the registered company name, and the registered company address. If the member state's VIES service is busy or offline, returns a 503 and the call is not charged.
Example use cases
B2B invoice VAT validation
“Before I issue this invoice, can you verify that my customer's VAT number DE811194697 is valid and registered in Germany, and pull their official company name and address?”
Supplier onboarding KYB check
“We're onboarding a new supplier who gave us VAT number FR83404833048 — can you confirm it's a legitimate registered EU business and get their registered name and address?”
E-commerce checkout VAT exemption
“A customer at checkout entered VAT number NL854280683B01 to claim a B2B tax exemption — please validate it against VIES and tell me if it's active so I can apply zero-rate VAT.”
Technical details
Endpoint
POSThttps://api.facts402.com/vat?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify the legitimacy of an EU VAT number for B2B invoicing, KYB, or onboarding workflows. It combines both an instant offline format and check-digit check with a live VIES lookup in a single call. Prefer it over manual VIES web lookups when automating compliance checks at scale. At $0.01 per call with no charge on unavailable member states, it is cost-effective for high-volume onboarding pipelines.
Side effects
- 503 returned when EU member state VIES service is temporarily unavailable or offline (not charged)
- Invalid format returns a validation error if VAT number doesn't match the country-prefix pattern
- Unknown or unregistered VAT number returns inactive/not-found status
- Network timeouts to VIES during peak hours
- Some member states may not expose company name/address even for valid numbers
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| vat_number | string | EU VAT number with country prefix, e.g. IE6388047V |
Tags
x402
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