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Italian VAT Number Checksum Validator
x402
Italian VAT Number Checksum Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-29).
Validates an Italian VAT number (Partita IVA) by verifying its checksum algorithm, without performing a live registry lookup.
Price / call$0.005
Success—
StatusUnknown
How this service works
Call when an agent needs whether a IT VAT checksum is valid. No registry lookup. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-vat-it first.
Output
Returns whether the provided Italian VAT number (Partita IVA) passes the official checksum algorithm, indicating structural validity without querying any external government registry.
Example use cases
E-commerce supplier onboarding check
“Before we add this Italian supplier to our system, can you verify that their VAT number IT04321678901 has a valid checksum? Just a structural check, not a registry lookup.”
Invoice data entry validation
“I'm processing an invoice from an Italian company and they've written their Partita IVA as 07654321008 — can you check if the checksum on that number is correct?”
Bulk data cleaning for Italian clients
“We imported a batch of Italian client records and I need to know if the VAT number 03456789012 passes the standard Italian checksum — flag it if it's structurally invalid.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-vat-it?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, offline checksum validation of an Italian VAT number without incurring the cost or latency of a live government registry lookup. Ideal for pre-filtering obviously invalid numbers before more expensive registry checks, or when registry access is unavailable. Prefer the free sandbox variant (/v1/sandbox/check-vat-it) for testing.
Side effects
- Empty or missing value field returns an error
- Value exceeding 20000 characters rejected
- Malformed input (non-numeric characters where digits expected) may return invalid result or error
- Payment of exactly $0.005 USDC required; incorrect payment amount results in 402 rejection
- Sandbox endpoint at /v1/sandbox/check-vat-it should be preferred when available to avoid charges
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN. |
| value | string | Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar. |
| schema | — | JSON Schema document for schema-check SKUs. Omit it on string checks. |
Tags
x402
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