the402 endpoint detail

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api.aventtech.com validate vat

https://api.aventtech.com/validate/vat

payable

Validate an EU VAT number and check whether a VAT registration is valid, against the official European Commission VIES registry in real time. Returns validity and, when available, the registered company name and address. Authoritative VAT number validation, verification and company lookup for invoicing, tax compliance and B2B onboarding across all EU member states.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x5100a134d768415cc4a25d7bdbcfc44394d62282
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
7 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:13:51.329Z (1d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.aventtech.com%2Fvalidate%2Fvat"