Web Domain

{
  "age_days": 11364,
  "available": false,
  "created": "1995-08-14T04:00:00Z",
  "dns": {
    "a": [
      "23.192.228.80"
    ],
    "mx": []
  },
  "domain": "example.com",
  "expires": "2027-08-13T04:00:00Z",
  "nameservers": [
    "a.iana-servers.net"
  ],
  "registered": true,
  "registrar": "RESERVED-Internet Assigned Numbers Authority",
  "risk_flags": [],
  "status": [
    "client delete prohibited"
  ],
  "wayback": {
    "first": {
      "timestamp": "1998-11-11T00:00:00Z"
    }
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://saylorinnovations.com/api/web/domain/:domain'

# 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://saylorinnovations.com/api/web/domain/:domain' \
  | 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%2Fsaylorinnovations.com%2Fapi%2Fweb%2Fdomain%2F%3Adomain
const res = await pay("https://saylorinnovations.com/api/web/domain/:domain");
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://saylorinnovations.com/api/web/domain/:domain")
    print(res.status_code, res.text)