Up · Chains

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://opportunity-api-production.up.railway.app/api/chains", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://opportunity-api-production.up.railway.app/api/chains" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "chains": [
    {
      "name": "Ethereum",
      "tokenSymbol": "ETH",
      "tvlUsd": 60000000000
    }
  ],
  "updatedAt": "2026-07-13T12:00:00Z"
}