Standard Constants

Last 30 days

Uptime

100%

Response time

129 ms typical, 129 ms slowest 5%

Last check

59 min 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/constants"

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%2Fstandard%2Fv1%2Fconstants
const res = await pay("https://api.onesource.io/standard/v1/constants");
console.log(await res.json());

Example input

{}

Example output

{
  "chain_id": 4663,
  "constants": [
    {
      "basis": "measured",
      "key": "license_floor_price",
      "read_at": "2026-09-15T03:00:00Z",
      "read_block": 63512040,
      "source_contract": "0x7cd3c6ec047b1a21ea65af64d7c850e6f6049015",
      "source_fn": "floorPrice",
      "value_num": "50000000000000000",
      "value_text": null
    }
  ],
  "network": "robinhood"
}

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