Perp funding rate and history

Current funding rate for one perpetual (hourly, per 8h and annualized) plus the last N hourly funding prints with premium, and window statistics (average, min, max, share of positive hours). limit = hours of history (default 24, max 500). Hyperliquid public data, no key.

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Input

Example output

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

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/perp-funding \
  -H "Content-Type: application/json" \
  -d '{"coin":"BTC","limit":24}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

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

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/perp-funding", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "coin": "BTC",
    "limit": 24
  }),
});

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