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EU VAT Number Validator (VIES Live Check)
x402
EU VAT Number Validator (VIES Live Check) is a paid API for AI agents from api.invoket.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Validates any EU VAT number live against the European Commission VIES service, or derives and checks a French VAT number from a SIREN, returning valid/invalid/unverifiable with syntax check always included.
Price / call$0.01
Success—
StatusUnknown
How this service works
Validate any EU VAT number live against the official European Commission VIES service before you invoice cross-border, or derive and check the French VAT number from a SIREN. Returns valid/invalid or an honest 'unverifiable' when the member state is down - syntax check always included. No account, no key.
Output
Returns a validation status of valid, invalid, or unverifiable (when the member state's VIES endpoint is temporarily down), plus a syntax check result. For French companies, can also derive the TVA number from a SIREN before checking it live.
Example use cases
Example prompt
“Before I send this invoice, can you validate the EU VAT number DE123456789 against the official VIES service to confirm it's active and syntactically correct?”
Technical details
Endpoint
GEThttps://api.invoket.com/company/vatWhen to prefer
Use this endpoint when you need a live, authoritative VIES validation of an EU VAT number before issuing a cross-border B2B invoice, without needing an account or API key. It is especially valuable for French VAT derivation from SIREN. Prefer this over purely syntax-based validators when you need to confirm active registration status. The honest 'unverifiable' response (rather than a false negative) makes it safe to use in automated invoice workflows.
Side effects
- Member state VIES service is temporarily unavailable — returns 'unverifiable' rather than an error, with syntax check still provided
- Malformed or invalid VAT number format — returns syntax error with detail on correct format
- Unsupported or non-EU country code — returns error indicating country is not a VIES member state
- Network or upstream VIES timeout — may return unverifiable status
- Missing required query parameters — returns 400-style error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| vatrequired | string | Complete VAT number with its country prefix, any EU member state plus XI (Northern Ireland), EL for Greece. Provide exactly one of 'vat' or 'siren' - 'siren' (9 digits) derives the French VAT number by pure computation, traced in derived_from_siren. Malformed number or unknown prefix is a 400 (INVALID_INPUT), an inconsistent FR key or Luhn checksum is a 400 (INVALID_CHECKSUM, likely a typo). There is no 404 |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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