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Synergy VAT Number Validation (EU VIES)
x402
Synergy VAT Number Validation (EU VIES) is a paid API for AI agents from api.exo-trust.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Validates a European VAT number against the EU VIES register to confirm its authenticity and registration status.
Price / call$0.005
Success—
StatusUnknown
How this service works
Validate a European VAT number against the EU VIES register (keyless deterministic lookup of the European Commission checkVatService).
Output
Returns whether the provided VAT number is valid and registered in the EU VIES system, along with any available registration details such as company name and address tied to the VAT number.
Example use cases
Supplier onboarding VAT check
“Before we add this new supplier to our system, can you verify their VAT number IT12345678901 is legitimately registered in Italy?”
Invoice validation before payment
“We received an invoice from a French company with VAT number FR12345678901 — can you confirm that number is valid in the EU VIES database before we process payment?”
Customer tax exemption verification
“A B2B customer in the Netherlands claims they're VAT-exempt and gave us NL123456789B01 as their VAT number — can you verify it's actually registered?”
Technical details
Endpoint
POSThttps://api.exo-trust.com/execute/validate_vatWhen to prefer
Use this endpoint when you need a deterministic, authoritative lookup of a European VAT number against the official EU VIES register. Prefer it for B2B invoicing compliance, supplier onboarding, or fraud prevention workflows where you need to confirm a VAT number is genuinely registered — not just formatted correctly. It is keyless (no separate API key required) and returns an authoritative result from the European Commission's own service.
Side effects
- Invalid or malformed VAT number format returns a validation error
- Country code not matching a recognized EU member state returns an error
- VIES register temporarily unavailable causes a service timeout or error response
- VAT number not found in VIES returns a 'not valid' or 'not registered' result
- Missing required fields (vat_number or country_code) returns a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| vat_number | string | |
| country_code | string |
Tags
x402
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