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Binance Futures Funding Rate & Mark Price Lookup
x402
Binance Futures Funding Rate & Mark Price Lookup is a paid API for AI agents from funding-rates.hergertsynthora.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Returns real-time perpetual funding rate and mark price for a specified Binance futures symbol
Price / call$0.05
Success—
StatusUnknown
How this service works
Real-time perpetual funding rates + mark price for any Binance futures symbol. Essential for delta-neutral and basis-trading agents. Free source, deterministic, instant JSON. $0.01 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.
Output
Returns real-time perpetual funding rate and mark price for the requested Binance futures symbol as JSON, enabling traders and agents to assess carry costs and basis for delta-neutral or funding-rate arbitrage strategies.
Example use cases
Monitor funding rates for delta-neutral strategy
“Check the current funding rate for ETHUSDT perpetual futures on Binance — I need to know if it's worth holding my delta-neutral position right now or if the carry cost is eating into my returns.”
Spot funding rate arbitrage opportunity
“What are the funding rates for SOLUSDT and BNBUSDT perps on Binance right now? I want to see which one has the most extreme rate so my arbitrage bot can prioritize where to open a position.”
Assess basis trading entry conditions
“Pull the mark price and funding rate for BTCUSDT perpetual futures — I'm trying to figure out whether the current basis makes this a good entry point for a basis trade before the next funding settlement.”
Technical details
Endpoint
POSThttps://funding-rates.hergertsynthora.com/serviceWhen to prefer
Use this endpoint when you need real-time Binance perpetual futures funding rates and mark prices for delta-neutral trading, basis trading, or funding rate arbitrage strategies. Prefer this over exchange REST APIs when you need a simple, deterministic JSON response with x402 micropayment support and a no-charge guarantee on upstream failure.
Side effects
- Invalid or unrecognized symbol returns an error response
- Upstream Binance API unavailability may return a no-charge failure response
- Malformed symbol string (e.g. wrong case or nonexistent pair) returns no data
- Network timeout on upstream Binance data feed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| symbol | string | symbol |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "funding-rates",
"result": {
"symbol": "BTCUSDT",
"mark_price": "64266.30000000",
"last_funding_rate": "0.00009163",
"next_funding_time": 1783699200000
},
"provenance": {
"url": "https://fapi.binance.com/fapi/v1/premiumIndex",
"source": "SYNTHORA Perp Funding Rates"
}
}
}Tags
x402
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