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SiteCheck Crypto Funding Rates
x402
SiteCheck Crypto Funding Rates is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-16).
Fetches perpetual futures funding rates, open interest, and mark prices for a given cryptocurrency across multiple major venues (Hyperliquid, OKX, Deribit, dYdX)
Price / call$0.002
Success—
StatusUnknown
How this service works
Perpetual futures funding for one coin across Hyperliquid, OKX, Deribit and dYdX v4: the current funding rate, the interval (1 or 8 hours), the annualised rate, the next funding time, open interest in coins and USD, and the mark or oracle price. A venue that does not list the coin is left out and named in unavailable. Rates are as the venues publish them; funding is paid between traders, not to the venue. Information only, not financial advice.
Output
Returns a JSON object containing, for each supported venue: the venue name, trading symbol, mark price, current funding rate (as a decimal), annualised funding rate, next funding timestamp, open interest in USD and in coins, and funding interval in hours. Also includes the coin ticker, count of venues returned, data sources, check timestamp, and a disclaimer.
Example use cases
Funding rate arbitrage opportunity scan
“Check the current BTC perpetual funding rates across all major venues and tell me which exchange has the most extreme rate right now — I'm looking for arbitrage opportunities.”
ETH perp trading cost assessment
“What's the current funding rate for ETH perpetuals and what would it cost me annualised to hold a long position — check across all available venues.”
SOL open interest monitoring
“Pull the latest SOL perpetual futures data — I want to see the funding rate, open interest in both USD and coins, and when the next funding settlement is on each exchange.”
Technical details
Endpoint
GEThttps://api.sitecheck-api.workers.dev/api/crypto/funding?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need real-time perpetual futures funding rate data aggregated across multiple major crypto derivatives venues in a single call. Prefer this over scraping individual exchange APIs when you need a cross-venue comparison of funding rates, open interest, and mark prices for a given coin ticker in one unified response.
Side effects
- Unknown or unsupported coin ticker returns an empty venues array or error
- Venue API temporarily unavailable — affected venue appears in 'unavailable' array
- Invalid coin parameter format (must be 2–10 alphanumeric characters) returns validation error
- Network timeout from upstream venue APIs may result in partial data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"coin": "BTC",
"count": 4,
"source": "Hyperliquid info API, OKX public API, Deribit public API, dYdX v4 indexer (funding, open interest, mark or oracle price)",
"venues": [
{
"venue": "Hyperliquid",
"symbol": "BTC-PERP",
"markPrice": 80595,
"fundingRate": -3.451e-7,
"annualisedRate": -0.003023076,
"nextFundingTime": "2026-10-15T14:00:00.000Z",
"openInterestUsd": 3234347967.339,
"openInterestCoins": 40130.8762,
"fundingIntervalHours": 1
},
{
"venue": "OKX",
"symbol": "BTC-USDT-SWAP",
"markPrice": 80665.2,
"fundingRate": 0.0000355757549793,
"annualisedRate": 0.0389554517023335,
"nextFundingTime": "2026-10-16T00:00:00.000Z",
"openInterestUsd": 2479076416.491917,
"openInterestCoins": 30761.32130000009,
"fundingIntervalHours": 8
},
{
"venue": "Deribit",
"symbol": "BTC-PERPETUAL",
"markPrice": 80633.35,
"fundingRate": 0.00002998,
"annualisedRate": 0.0328281,
"nextFundingTime": "2026-10-15T16:00:00.000Z",
"openInterestUsd": 885841470,
"openInterestCoins": 10986.0432438935,
"fundingIntervalHours": 8
}
],
"checkedAt": "2026-10-15T13:40:00.658Z",
"disclaimer": "Information only, not financial advice.",
"unavailable": []
}
}Tags
x402
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