Standard Events

Last 30 days

Uptime

100%

Response time

115 ms typical, 115 ms slowest 5%

Last check

4 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/standard/v1/events?contract_label=charter&event_name=Transfer"

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 $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.onesource.io%2Fstandard%2Fv1%2Fevents
const res = await pay("https://api.onesource.io/standard/v1/events?contract_label=charter&event_name=Transfer");
console.log(await res.json());

Example input

{
  "contract_label": "charter",
  "event_name": "Transfer"
}

Example output

{
  "as_of_block": 63499800,
  "basis": "raw_event",
  "chain_id": 4663,
  "events": [
    {
      "@timestamp": "2026-09-15T03:00:00Z",
      "amount_raw": "1",
      "args": {
        "tokenId": "42"
      },
      "block_hash": "0x9f2b1c0d4e7a5b83c61f0d2a4e8b7c95d3a1f6e08b2c4d7a9e5f31b0c8d2a4e6",
      "block_number": 63499800,
      "contract_address": "0x69101f92427376fa80476a997d024cf9dc3eae39",
      "contract_label": "charter",
      "epoch": 128,
      "event_name": "Transfer",
      "from_address": "0x0000000000000000000000000000000000000000",
      "log_index": 4,
      "owner": "0x5977b25419f9c0ddcb2f89fe204955622f4f57ea",
      "removed": false,
      "to_address": "0x5977b25419f9c0ddcb2f89fe204955622f4f57ea",
      "token_id": "42",
      "transaction_hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
      "transaction_index": 2
    }
  ],
  "network": "robinhood",
  "next_before": "63499800:4"
}

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