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Toll402 Italian Partita IVA Validator
x402
Toll402 Italian Partita IVA Validator is a paid API for AI agents from toll402.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates an Italian Partita IVA (VAT number) offline by checking the 11-digit format and recomputing the Luhn-like check digit.
Price / call$0.001
Success—
StatusUnknown
How this service works
Offline validator for an Italian Partita IVA (VAT number): verifies the value is 11 numeric digits and recomputes the Luhn-like check digit (digits in odd positions summed as-is, digits in even positions doubled with 9 subtracted if the result exceeds 9, total summed and complemented mod 10) to confirm it matches the 11th digit.
Output
Returns whether the provided Partita IVA passes both structural validation (exactly 11 numeric digits) and check-digit verification using the Luhn-like algorithm specific to Italian VAT numbers, indicating if the number is valid or invalid.
Example use cases
Invoice submission pre-check
“Before I send this invoice to my Italian supplier, can you verify their Partita IVA 02438750586 is correctly formatted and has a valid check digit?”
Onboarding Italian business partner
“We're adding a new Italian vendor to our system with VAT number 00743110157 — can you validate that Partita IVA before we save it to our database?”
Bulk data cleanup for Italian clients
“I have an Italian company's tax ID listed as 8054930158 in our CRM — can you check whether that Partita IVA is valid or if it's been entered incorrectly?”
Technical details
Endpoint
POSThttps://toll402.dev/v1/t/partita_iva_validateWhen to prefer
Use this endpoint when you need fast, offline validation of Italian Partita IVA numbers without calling external government APIs. It's ideal for form validation, data cleaning, or pre-submission checks where low latency and no external dependencies matter. Prefer it over live VIES or Italian tax authority lookups when you only need format and check-digit correctness rather than active registration status.
Side effects
- Non-numeric characters that cannot be stripped cause a format error
- Input shorter or longer than 11 digits after normalization returns invalid
- Check digit mismatch returns validation failure even if format is correct
- Empty or missing partitaIva field returns a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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