Kline/Candlestick Streams

Type: NONE

WS kline:<symbol>:<interval>

Status: Implemented. Binance equivalent: <symbol>@kline_<interval>.

Subscribe

{ "type": "subscribe", "channel": "kline:BTCUSDT:1m" }

interval ∈ 1m 5m 15m 1h 4h 1d 1w 1M (the natively stored buckets; the REST-only aliases such as 3m are not accepted here).

Snapshot on subscribe

{
  "type": "kline_snapshot",
  "channel": "kline:BTCUSDT:1m",
  "data": {
    "time": 1741298400,
    "open": "97450.00",
    "high": "97600.00",
    "low": "97400.00",
    "close": "97520.00",
    "volume": "45.30",
    "quote_volume": "4415000.00",
    "trade_count": 120,
    "is_final": true
  }
}

Updates

{ "type": "kline", "channel": "kline:BTCUSDT:1m", "data": { "...": "same shape", "is_final": false } }

Field	Notes
time	Bar open time in Unix seconds (REST /fapi/v1/klines uses ms)
is_final	false while the bar is still forming
quote_volume, trade_count	Omitted when unknown