Candlestick Channel

Description
Order K-line channel

Request Parameters

Parameter	Type	Required	Description
event	String	Yes	Operation: subscribe / unsubscribe
channel	String	Yes	Channel name.format: kline.{priceType}.{contractId}.{interval} Example: kline.LAST_PRICE.cmt_btcusdt.MINUTE_1

priceType Parameters

Value	Description
LAST_PRICE	Latest price K-line
MARK_PRICE	Mark price K-line

interval Parameters

Value	Description
MINUTE_1	1-minute
MINUTE_5	5-minute
MINUTE_15	15-minute
MINUTE_30	30-minute
HOUR_1	1-hour
HOUR_2	2-hour
HOUR_4	4-hour
HOUR_6	6-hour
HOUR_8	8-hour
HOUR_12	12-hour
DAY_1	Daily
WEEK_1	Weekly
MONTH_1	Monthly

Request Example

{  
  "event": "subscribe",  
  "channel": "kline.LAST_PRICE.cmt_btcusdt.MINUTE_1"  
}  

Response Parameters

Field	Type	Description
event	String	Operation: subscribed / unsubscribed
channel	String	Channel name

Subscription Response Example

{  
    "event": "subscribed",  
    "channel": "kline.LAST_PRICE.cmt_btcusdt.MINUTE_1"  
}  

Push Data Parameters

Field	Type	Description
event	String	Push action
type	String	Type: change (incremental), snapshot (full)
channel	String	Channel name
data	List	Subscribed data
>symbol	String	Product ID
>klineTime	String	K-line timestamp
>size	String	Trading volume
>value	String	Trading amount
>high	String	Highest price
>low	String	Lowest price
>open	String	Opening price
>close	String	Closing price

Push Data Example

{
  "event": "payload",
  "type": "change",
  "channel": "kline.LAST_PRICE.cmt_btcusdt.MINUTE_1",
  "data": [
    {
      "symbol": "cmt_btcusdt",
      "klineTime": "1747125660000",
      "size": "23.76600",
      "value": "2442678.713400",
      "high": "102784.6",
      "low": "102760.6",
      "open": "102760.6",
      "close": "102764.0"
    }
  ]
}