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EU VAT Number Format Validator
x402
EU VAT Number Format Validator is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).
Validates the format of EU VAT numbers for all member states and checks the Spanish check digit, without querying VIES.
Price / call$0.003
Success—
StatusUnknown
How this service works
EU VAT number format validation for all member states (plus Spanish check digit). Does not query VIES.
Output
Returns a JSON object with: 'valido' (overall validity boolean), 'formato_valido' (format validity boolean), 'digito_control_valido' (check digit validity boolean, especially for Spanish numbers), 'pais' (extracted country code), 'numero' (parsed VAT number), and 'nota' (explanatory note if applicable).
Example use cases
Pre-invoice VAT number check
“Before I send this invoice to a Spanish supplier, can you verify that their VAT number ESB12345674 has a valid format and correct check digit?”
E-commerce checkout VAT validation
“A customer entered DE123456789 as their VAT number at checkout — can you tell me if that's a valid German VAT format?”
Bulk supplier onboarding validation
“We're onboarding a new French supplier who gave us their VAT number FR40303265045 — can you check whether the format is valid before we add them to our system?”
Technical details
Endpoint
POSThttps://api.vextorium.com/validar-iva-pago?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, offline-style format check on EU VAT numbers before hitting VIES or sending invoices — especially useful for Spanish VAT numbers where check digit verification is needed. It does not perform a live VIES registry lookup, so use it for format pre-screening only.
Side effects
- Missing or malformed 'numero' field returns a validation error
- VAT number without a recognized EU country prefix may return formato_valido=false
- Non-EU country codes will fail format validation
- Network timeout or service unavailability returns an HTTP error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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