BTC exchange rates · Exchange Rates

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/exchange-rates", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://agent402.tools/api/exchange-rates?currencies=usd%2Ceur%2Ceth%2Cxau" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "base": "BTC",
  "cached": false,
  "count": 4,
  "fetchedAt": "2026-08-22T13:20:00.000Z",
  "rates": [
    {
      "code": "usd",
      "name": "US Dollar",
      "perBtc": 77018,
      "type": "fiat",
      "unit": "$"
    },
    {
      "code": "eur",
      "name": "Euro",
      "perBtc": 65600.2,
      "type": "fiat",
      "unit": "€"
    },
    {
      "code": "eth",
      "name": "Ether",
      "perBtc": 31.813,
      "type": "crypto",
      "unit": "ETH"
    },
    {
      "code": "xau",
      "name": "Gold - Troy Ounce",
      "perBtc": 22.91,
      "type": "commodity",
      "unit": "XAU"
    }
  ],
  "source": "coingecko"
}