Domain

{
  "ageDays": 9399,
  "availability": "registered",
  "createdAt": "2001-01-13T00:12:14.000Z",
  "daysUntilExpiry": 461,
  "dns": {
    "ipv4": [
      "185.15.59.224"
    ],
    "ipv6": [
      "2a02:ec80:300:ed1a::1"
    ],
    "mx": [
      "mx-in1001.wikimedia.org"
    ],
    "nullMx": false,
    "resolves": true
  },
  "dnssec": false,
  "domain": "wikipedia.org",
  "expiresAt": "2027-01-13T00:12:14.000Z",
  "nameServers": [
    "ns0.wikimedia.org",
    "ns1.wikimedia.org"
  ],
  "note": "From the registry's RDAP service.",
  "rdapAvailable": true,
  "registered": true,
  "registeredDomain": "wikipedia.org",
  "registrantCountry": "US",
  "registrantOrganisation": "Wikimedia Foundation, Inc.",
  "registrar": "MarkMonitor Inc.",
  "registrarIanaId": "292",
  "source": "IANA RDAP bootstrap + the TLD registry's RDAP server; DNS over HTTPS (Cloudflare, Google)",
  "statusCodes": [
    "client delete prohibited",
    "client transfer prohibited"
  ],
  "updatedAt": "2025-12-13T09:51:53.000Z"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/domain?domain=wikipedia.org'

# 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 - 'https://api.sitecheck-api.workers.dev/api/domain?domain=wikipedia.org' \
  | 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%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fdomain
const res = await pay("https://api.sitecheck-api.workers.dev/api/domain?domain=wikipedia.org");
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.get("https://api.sitecheck-api.workers.dev/api/domain?domain=wikipedia.org")
    print(res.status_code, res.text)