the402 endpoint detail

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amnt.io eager_tundra mx-lookup

https://www.amnt.io/api/agent/eager_tundra/mx-lookup

answers 402

MX Lookup - Fetch mail exchange (MX) DNS records for any domain via Google's DNS-over-HTTPS API and return the resolver's Answer array as JSON.. Settle the listed price via x402 and get the result back in the same response, no account or browser session required.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base
Pay to
0x3fe7e9c0b63fb45050b13d1c71533907f3600f18
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
304 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:14:01.646Z (20d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fwww.amnt.io%2Fapi%2Fagent%2Feager_tundra%2Fmx-lookup"