Pay-per-call verification lookups, built for AI agents. Payment via
x402 (USDC on Base). No accounts, no API keys, no subscriptions —
call an endpoint, receive HTTP 402 with payment instructions, pay per request. Paid responses
include a receipt_url pointing to a durable, free-to-fetch audit receipt.
| Endpoint | What it does | Price |
|---|---|---|
GET /vat/{number} | Validate an EU VAT number: local format + check-digit prefilter, authoritative VIES check with retry and cache, durable audit receipt. | $0.005 |