Domain Lookup

{
  "ageDays": 11380,
  "at": "2026-10-10T12:48:30.425Z",
  "dns": {
    "A": [
      "172.66.147.243",
      "104.20.23.154"
    ],
    "AAAA": [
      "2606:4700:10::6814:179a",
      "2606:4700:10::ac42:93f3"
    ],
    "CAA": [],
    "CNAME": [],
    "MX": [
      {
        "exchange": "",
        "priority": 0
      }
    ],
    "NS": [
      "hera.ns.cloudflare.com",
      "elliott.ns.cloudflare.com"
    ],
    "TXT": [
      "v=spf1 -all",
      "_k2n1y4vw3qtb4skdx9e7dxt97qrmmq9"
    ]
  },
  "domain": "example.com",
  "email": {
    "dmarc": "v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s",
    "hasMx": true,
    "spf": "v=spf1 -all"
  },
  "rdap": {
    "dnssec": true,
    "expires": "2027-08-13T04:00:00Z",
    "handle": "2336799_DOMAIN_COM-VRSN",
    "lastChanged": "2026-08-14T08:01:43Z",
    "nameservers": [
      "elliott.ns.cloudflare.com",
      "hera.ns.cloudflare.com"
    ],
    "registered": "1995-08-14T04:00:00Z",
    "registrar": "RESERVED-Internet Assigned Numbers Authority",
    "status": [
      "client delete prohibited",
      "client transfer prohibited",
      "client update prohibited"
    ]
  },
  "resolves": true
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://lumenworks-x402-decoder.onrender.com/v1/domain/lookup' \
  -H 'content-type: application/json' \
  --data-raw '{"domain":"example.com"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://lumenworks-x402-decoder.onrender.com/v1/domain/lookup' \
  -H 'content-type: application/json' \
  --data-raw '{"domain":"example.com"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

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

// Pays at most $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Flumenworks-x402-decoder.onrender.com%2Fv1%2Fdomain%2Flookup&method=POST
const res = await pay("https://lumenworks-x402-decoder.onrender.com/v1/domain/lookup", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "domain": "example.com"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://lumenworks-x402-decoder.onrender.com/v1/domain/lookup",
        json={
            "domain": "example.com",
        },
    )
    print(res.status_code, res.text)