Verify

{
  "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
  "buy_tax_pct": 0,
  "cex_list": [
    "Binance",
    "Coinbase"
  ],
  "cex_listed": true,
  "chain": "eth",
  "dex_listed": true,
  "has_selfdestruct": false,
  "hidden_owner": false,
  "holder_count": 6899288,
  "is_honeypot": false,
  "is_mintable": false,
  "is_open_source": true,
  "is_proxy": true,
  "name": "USD Coin",
  "risk_flags": [],
  "risk_label": "clean",
  "risk_score": 0,
  "sell_tax_pct": 0,
  "summary": "USDC (USD Coin) on ETH: Risk 0/10 (clean) | No flags",
  "symbol": "USDC",
  "trust_list": true
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://contract.lonestaroracle.xyz/verify?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=eth&contract=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&wallet=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'

# 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://contract.lonestaroracle.xyz/verify?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=eth&contract=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&wallet=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913' \
  | 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 $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
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 $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fcontract.lonestaroracle.xyz%2Fverify
const res = await pay("https://contract.lonestaroracle.xyz/verify?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=eth&contract=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&wallet=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913");
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 $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://contract.lonestaroracle.xyz/verify?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=eth&contract=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&wallet=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913")
    print(res.status_code, res.text)