DNS lookup

Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver — no external API.

Input

Field	Type	Description
host *	string	Hostname to resolve
type	string	Record type: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV (default A)

Example output

{
  "host": "google.com",
  "type": "MX",
  "records": [
    {
      "priority": 10,
      "exchange": "smtp.google.com"
    }
  ],
  "count": 1,
  "queriedAt": "2026-06-19T20:00:00.000Z"
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/dns-lookup \
  -H "Content-Type: application/json" \
  -d '{"host":"google.com","type":"MX"}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/dns-lookup", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "host": "google.com",
    "type": "MX"
  }),
});

Wallet-only. This tool reaches the network/browser/storage, so it is paid in USDC via x402 (no proof-of-work tier).

Related tools