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Hyperliquid Perpetual Funding Rate API (x402)
x402
Hyperliquid Perpetual Funding Rate API (x402) is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).
Returns real-time perpetual futures funding rates, mark/oracle prices, and open interest for BTC, ETH, or SOL from Hyperliquid, paid per-call via x402 USDC micropayment.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.
Output
Returns a JSON object with mark price, oracle price, open interest (in units and USD), hourly funding rate, annualized funding APR percentage, the venue name (hyperliquid), source URLs, and an ISO 8601 timestamp of last update — keyed by coin symbol (BTC/ETH/SOL).
Example use cases
Funding arbitrage signal detection
“Check the current ETH perp funding rate on Hyperliquid — if the annualized APR is above 20%, flag it so I can consider a cash-and-carry trade.”
Pre-trade position sizing check
“Before I open a long SOL perp position, can you pull the current mark price, oracle price, and open interest on Hyperliquid so I can assess liquidity and drift?”
Automated funding rate monitor for trading bot
“Every hour, check the BTC perp funding rate on Hyperliquid and alert me if the hourly rate flips negative or exceeds 0.01%.”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/api/perp-funding?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent needs real-time Hyperliquid-specific perpetual funding rates, mark/oracle price spreads, or open interest data without API key management — especially in micropayment-native (x402) agent architectures where per-call USDC billing is preferred over subscriptions. Best suited for trading agents that need funding rate signals to evaluate carry trades, position costs, or market sentiment on BTC, ETH, or SOL perps specifically on Hyperliquid.
Side effects
- Payment not sent or insufficient USDC balance — 402 Payment Required returned
- Invalid or unsupported coin symbol — falls back to default (BTC) or returns error
- Hyperliquid upstream API downtime — stale or missing data
- Network timeout on the Cloudflare Worker — connection error
- Missing query param defaults to BTC silently — agent may receive wrong coin's data if param omitted
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"coins": {
"BTC": {
"mark_px": 80860,
"oracle_px": 80870,
"open_interest": 30000,
"funding_hourly": 0.0000125,
"funding_apr_pct": 10.95,
"open_interest_usd": 2426000000
}
},
"venue": "hyperliquid",
"sources": [
"https://api.hyperliquid.xyz/info"
],
"updated_at": "2026-10-28T11:00:00Z"
}
}Tags
x402
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