❗️ Deprecation Notice: This page will be discontinued on April 17, 2026. Please migrate to the new link documentation . Contact LTP support if you need assistance.
Rate Limit : 10 requests per second per IP for Subscribe and Unsubscribe.
JSON
{
"event": "SUBSCRIBE",
"arg": [
{
"channel": "MARK_PRICE",
"instId": "OKX_PERP_BTC_USDT"
}
]
}
Field name Type Necessary Remarks event StringY SUBSCRIBE, UNSUBSCRIBE arg ArrayY Subscribe param,there can be no more than 50 instId parameters per subscribe > channel StringY Channel name: MARK_PRICE > instId StringY Unique identifier
JSON
{
"event": "SUBSCRIBE",
"arg": [
{
"channel": "MARK_PRICE",
"instId": "BINANCE_PERP_BTC_USDT"
}
],
"code": 0,
"message": "Success"
}
Field Type Remarks event StringEvent code StringError Code msg StringError Message arg ArraySubscribe param > channel StringChannel > instId StringUnique identifier
JSON
{
"channel": "MARK_PRICE",
"localTs": 1736423655001,
"instId": "BINANCE_PERP_BTC_USDT",
"markPrice": "93476.2"
}
Field Type Remarks channel String"MARK_PRICE" instId StringUnique identifier markPrice StringMark price localTs LongUpdate time