ToolVet
83trust / 100

Perp Funding

by Perp funding rate and history in Onchain & crypto

x402 APIPassing, checked 23 min ago

Current and historical funding rate for one perpetual futures market, from a live derivatives venue: hourly rate, the 8-hour and annualized equivalents, the mark-vs-oracle premium, and a window of past prints with average, minimum, maximum and the share that were positive. Use it when an agent needs to know what holding a leveraged position costs right now, or wants to detect a funding regime flip before sizing a trade.

POST https://agent402.tools/api/perp-funding

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
186 ms typical, 186 ms slowest 5%
Last check
23 min ago
Next check
in 7 min

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://agent402.tools/api/perp-funding" \
  -H "content-type: application/json" \
  -d '{"coin":"BTC","limit":24}'
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%2Fagent402.tools%2Fapi%2Fperp-funding
const res = await pay("https://agent402.tools/api/perp-funding", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"coin":"BTC","limit":24}),
});
console.log(await res.json());

Example input

{
  "coin": "BTC",
  "limit": 24
}

Example output

{
  "coin": "BTC",
  "current": {
    "aprPct": 10.95,
    "hourly": 0.0000125,
    "per8h": 0.0001,
    "premiumPct": 0.0388
  },
  "fetchedAt": "2026-08-22T12:00:00.000Z",
  "history": [
    {
      "fundingRate": 0.0000125,
      "premium": 0.00043,
      "time": "2026-08-22T11:00:00.000Z"
    }
  ],
  "markPx": 77267,
  "source": "hyperliquid",
  "stats": {
    "avgAprPct": 10.95,
    "avgHourly": 0.0000125,
    "avgPer8h": 0.0001,
    "maxHourly": 0.0000125,
    "minHourly": 0.0000125,
    "points": 24,
    "positiveSharePct": 100
  }
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
23 min agoPassed402225 ms$0.002
6 h agoPassed402186 ms$0.002