Onesource · Chain Code

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://api.onesource.io/api/chain/code/:address", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://api.onesource.io/api/chain/code/:address?network=ethereum" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "data": {
    "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
    "code": "0x6080604052600436106101...",
    "code_length": 10234,
    "is_contract": true
  },
  "meta": {
    "cost_usdc": "0.001",
    "endpoint": "/api/chain/code/0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
    "payment_chain": "base",
    "payment_token": "USDC",
    "request_id": "00000000abcdef01"
  }
}