Chain Block

Last 30 days

Uptime

100%

Response time

115 ms typical, 115 ms slowest 5%

Last check

1 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://api.onesource.io/api/chain/block/:number?network=ethereum"

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.onesource.io%2Fapi%2Fchain%2Fblock%2F%3Anumber
const res = await pay("https://api.onesource.io/api/chain/block/:number?network=ethereum");
console.log(await res.json());

Example input

{
  "network": "ethereum"
}

Example output

{
  "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"
  }
}

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