Perp Open Interest

Last 30 days

Uptime

100%

Response time

193 ms typical, 193 ms slowest 5%

Last check

3 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://agent402.tools/api/perp-open-interest" \
  -H "content-type: application/json" \
  -d '{"limit":10}'

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%2Fagent402.tools%2Fapi%2Fperp-open-interest
const res = await pay("https://agent402.tools/api/perp-open-interest", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"limit":10}),
});
console.log(await res.json());

Example input

{
  "limit": 10
}

Example output

{
  "fetchedAt": "2026-08-22T12:00:00.000Z",
  "markets": [
    {
      "coin": "BTC",
      "markPx": 77267,
      "openInterest": 35935.67,
      "openInterestUsd": 2776803000,
      "shareOfTotalPct": 29.2,
      "volume24hUsd": 4679441788.67
    }
  ],
  "source": "hyperliquid",
  "totalOpenInterestUsd": 9500000000
}

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