OPEN_INTEREST

OPEN_INTEREST

Rate Limit: 10 requests per second per IP for Subscribe and Unsubscribe.

channel is only suitable for contract pairs

Active currency pair 4s push, inactive currency pair maximum 15s

Request

JSON

{
    "event": "SUBSCRIBE",
    "arg": [
        {
            "channel": "OPEN_INTEREST",
            "instId": "OKX_PERP_BTC_USDT"
        }
    ]
}

Field name	Type	Necessary	Remarks
event	String	Y	SUBSCRIBE, UNSUBSCRIBE
arg	Array	Y	Subscribe param，there can be no more than 50 instId parameters per subscribe
> channel	String	Y	Channel name: OPEN_INTEREST
> instId	String	Y	Unique identifier

Response

Field	Type	Remarks
event	String	Event
code	String	Error Code
msg	String	Error Message
arg	Array	Subscribe param
> channel	String	Channel
> instId	String	Unique identifier

JSON

{  
    "event": "SUBSCRIBE",  
    "arg": [  
        {  
            "channel": "OPEN_INTEREST",  
            "instId": "BINANCE_PERP_BTC_USDT"  
        }  
    ],  
    "code": 0,  
    "message": "Success"  
}

Open_Interest example:

Field	Type	Remarks
channel	String	OPEN_INTEREST
instId	String	Unique identifier
open_interest	String	eg. 24h Volume(BTC) for BTCUSDT
localTs	Long	Update time

JSON

{  
    "channel": "OPEN_INTEREST",
    "localTS":1742197863262,
     "instId": "BINANCE_PERP_BTC_USDT",
     "open_interest": "12875700048"
 }