Funding Rate — Extreme Scanner

GET /funding-rate/extreme

Scan all perpetual markets for extreme funding rates above a threshold.

Cost: $0.02 USDC

Query Parameters

Param	Type	Default	Description
threshold	float	0.01	Minimum absolute funding rate % to flag as extreme

Request Example

curl -H "x-payment: <proof>" \
  "https://api.foursec.xyz/funding-rate/extreme?threshold=0.05"

Response

{
  "scanned_at": "2026-07-08T14:30:00Z",
  "threshold": 0.05,
  "total_markets_scanned": 150,
  "extreme_markets": 3,
  "results": [
    {
      "symbol": "DOGEUSDT",
      "funding_rate": 0.0012,
      "funding_rate_pct": 0.12,
      "annualized_pct": 131.4,
      "direction": "longs_paying",
      "signal": "extreme_bullish",
      "mark_price": 0.1823,
      "next_funding_time": "2026-07-08T16:00:00Z"
    },
    {
      "symbol": "PEPEUSDT",
      "funding_rate": -0.0008,
      "funding_rate_pct": -0.08,
      "annualized_pct": -87.6,
      "direction": "shorts_paying",
      "signal": "extreme_bearish",
      "mark_price": 0.00001245,
      "next_funding_time": "2026-07-08T16:00:00Z"
    }
  ]
}

Use Case

Use this endpoint to find funding rate arbitrage opportunities — markets where the rate is extreme enough that a basis trade (long spot + short perp, or vice versa) is profitable.

Data Source

Binance FAPI across all active perpetual markets. Cache TTL: 30 seconds.

Related Endpoints

• Current Rate — per symbol
• Cross-Exchange Compare — Binance vs OKX vs Bybit