the402 endpoint detail

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api.aventtech.com lookup domain

https://api.aventtech.com/lookup/domain

payable

Look up a domain name and check whether it is registered or available. Queries authoritative registry data via RDAP to return registration status, the registrar, creation and expiry dates, nameservers and status flags. Real-time domain availability check, WHOIS-style lookup and expiry monitoring for any domain.

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
335 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:09:45.981Z (1d ago)
Category
search

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