Onesource · Chain Block

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/block/:number", {
  method: "GET",
});
const data = await res.json();

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

{
  "data": {
    "result": {
      "gasLimit": "0x1c9c380",
      "gasUsed": "0xe4e1c0",
      "hash": "0x3f5f8b0a8e9b7c6d4f2a1b5e8c9d7a3f6e4b9d1c5a8f2e7b4d6c3a9e1f0b8d5c",
      "number": "0x133da1e",
      "parentHash": "0x3f5f8b0a8e9b7c6d4f2a1b5e8c9d7a3f6e4b9d1c5a8f2e7b4d6c3a9e1f0b8d5b",
      "timestamp": "0x6567c8e0",
      "transactions": [
        "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f"
      ]
    }
  },
  "meta": {
    "cost_usdc": "0.001",
    "endpoint": "/api/chain/block/latest",
    "payment_chain": "base",
    "payment_token": "USDC",
    "request_id": "00000000abcdef01"
  }
}