Description

Retrieve the candlesticks data of a symbol. Data will be pushed every 500 ms.

The channel will push a snapshot after successful subscription, followed by subsequent updates.

To switch K-line intervals without disconnecting the WebSocket, you must first send an "unsubscribe" command to cancel the previous K-line subscription before subscribing to the new interval. For example, if you are currently subscribed to mark_kline_1min and want to switch to mark_kline_15min, you must first unsubscribe from mark_kline_1min and then subscribe to mark_kline_15min.

Request Parameters

Parameter	Type	Required	Description
op	String	Yes	Operation, subscribe unsubscribe
args	List<Object>	Yes	List of channels to request subscription
> ch	String	Yes	Channel name, The subscription channel is: Price TypeklineTime Interval；The price types include market price and marked price；market_kline_1min,mark_kline_1min,market_kline_3min,mark_kline_3min,market_kline_5min,mark_kline_5min,market_kline_15min,mark_kline_15min,market_kline_30min,mark_kline_30min,market_kline_60min,mark_kline_60min,market_kline_2h,mark_kline_2h,market_kline_4h,mark_kline_4h,market_kline_6h,mark_kline_6h,market_kline_8h,mark_kline_8h,market_kline_12h,mark_kline_12h,market_kline_1day,mark_kline_1day,market_kline_3day,mark_kline_3day,market_kline_1week,mark_kline_1week,market_kline_1month,mark_kline_1month
> symbol	String	Yes	Product ID E.g. ETHUSDT

request example:

{
    "op":"subscribe",
    "args":[
        {
            "symbol":"BTCUSDT",
            "ch":"market_kline_1min" 
        }
    ]
}

Push Parameters

Parameter	Type	Description
ch	String	Channel name
symbol	String	Product ID E.g. ETHUSDT
ts	int64	Time stamp
data	List<String>	Subscription data
> o	String	Opening price
> h	String	Highest price
> l	String	Lowest price
> c	String	Closing price
> b	String	Trading volume of the coin
> q	String	Trading volume of quote currency

push data:

{ 
  "ch": "market_kline_1min",
  "symbol": "BTCUSDT",
  "ts": 1775541412718,                   
  "data":{
      "o": "68581.4",                     
      "c": "68583.4",                     
      "h": "68590",                     
      "l": "68579.5",                    
      "b": "5.2395",                     
      "q": "359348.14078"                         
  }
}