Web answer · Answer

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://agent402.tools/api/answer", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://agent402.tools/api/answer?q=what+is+the+x402+payment+protocol%3F" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "answer": "x402 is an open standard for internet-native, pay-per-request HTTP APIs that uses the HTTP 402 \"Payment Required\" status code to negotiate and settle micro-payments inline with the original request.",
  "citationCount": 1,
  "citations": [
    {
      "favicon": "https://imgs.search.brave.com/...",
      "number": 1,
      "snippet": "x402: An open standard for internet-native payments.",
      "url": "https://www.x402.org/"
    }
  ],
  "query": "what is the x402 payment protocol?"
}