Rainbow-band classifier — distance-to-2Y-high proxy.

Approximation of the Rainbow Chart band using `price / 2Y rolling high` as the axis. A full log-regression fit is overkill for a status readout; this gives a stable band classification and is documented as a deliberate simplification.

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; ... }
// }

{
  asset: string;
  signal: CycleSignal | null;
}

Example

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

curl -sS "http://localhost:3000/api/v1/indicators/rainbow"

{
  "data": {
    "asset": "BTC",
    "signal": {
      "key": "rainbow",
      "name": "Rainbow Band",
      "state": { "status": "neutral", "current": 0.72, "threshold": 1.0, "score": 1 },
      "available": true,
      "sparkline": [60000, 61200, 59800]
    }
  },
  "meta": { "total": 1, "asset": "BTC" }
}