Per-coin cross-exchange average premium %, bucketed to 5-minute floors.

Time series for a single base asset — the cross-exchange arithmetic average premium % within each 5-minute bucket. Intended for sparkline / chart rendering.

Query parameters

All query parameters are optional unless marked required.

Response shape

Always wrapped in the standard envelope. Nullable fields are explicitly marked — treat missing numeric data as a real data-source gap, not as an error.

// Wrapped in the standard envelope:
// {
//   data: /* shape below */,
//   meta?: { total?: number; limit?: number; offset?: number; ... }
// }

{
  base: string;
  days: number;
  points: Array<{ ts: number; premiumPct: number }>;
}

Example

Copy the curl, replace YOUR_KEY with a real key from your dashboard, and run.

curl -sS "http://localhost:3000/api/v1/futures/premium-index/history?coin=BTC&days=7" \
  -H "Authorization: Bearer cg_live_YOUR_KEY"

{
  "data": {
    "base": "BTC",
    "days": 7,
    "points": [
      { "ts": 1744220400000, "premiumPct": 0.031 },
      { "ts": 1744220700000, "premiumPct": 0.028 }
    ]
  },
  "meta": { "total": 2, "days": 7 }
}