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GET
/
api
/
v1
/
basis
Futures Basis
curl --request GET \
  --url https://api.example.com/api/v1/basis
Returns the futures basis — the difference between the futures mark price and the spot index price. Positive basis (contango) indicates bullish sentiment. Negative basis (backwardation) is a capitulation signal and historically marks local bottoms.

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Parameters

ParameterTypeDefaultDescription
symbolstringBTCUSDTTrading pair
hoursnumber24Lookback window in hours (max 168)

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Example Request

curl -X GET "https://krovn.io/api/v1/basis?symbol=BTCUSDT&hours=24" \
  -H "X-API-Key: your_api_key"

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Example Response

{
  "symbol": "BTCUSDT",
  "data": [
    {
      "timestamp": "2026-03-21T10:00:00.000Z",
      "markPrice": 87435.20,
      "indexPrice": 87420.50,
      "basisPct": 0.0168,
      "estFunding": 0.000312
    },
    {
      "timestamp": "2026-03-21T11:00:00.000Z",
      "markPrice": 87610.40,
      "indexPrice": 87598.30,
      "basisPct": 0.0138,
      "estFunding": 0.000285
    }
  ],
  "dataPoints": 2,
  "current": {
    "timestamp": "2026-03-21T11:00:00.000Z",
    "markPrice": 87610.40,
    "indexPrice": 87598.30,
    "basisPct": 0.0138,
    "estFunding": 0.000285
  },
  "signal": "FLAT"
}
Signals: CONTANGO (basis > 0.05%), BACKWARDATION (basis < -0.05%), FLAT (between -0.05% and 0.05%). Persistent backwardation across multiple coins is a strong capitulation indicator.