Instruments Channel

Description

Push trading parameter and trading pair status changes for a product. When trading parameters change (e.g. limit price ratio, price protection, order price/quantity precision, etc.) or the trading pair status changes (e.g. listed, online, maintenance, etc.), this channel pushes a message containing the new values.

After subscribing, messages are pushed only when trading parameters change. It is recommended to first fetch the full information via REST, then subscribe to this channel to receive subsequent changes.

Code
{
    "op": "subscribe",
    "args": [
        {
            "instType": "usdt-futures",
            "topic": "instruments"
        }
    ]
}

Code
{
  "event": "subscribe",
  "arg": {
    "instType": "usdt-futures",
    "topic": "instruments"
  },
  "connId": "xxxxxxxxxx"
}

Code
{
  "data": [
    {
      "baseCoin": "BTC",
      "quoteCoin": "USDT",
      "buyLimitPriceRatio": "0.05",
      "sellLimitPriceRatio": "0.05",
      "marketPriceRatio": "0.05",
      "priceProtectThreshold": "0.1",
      "feeRateUpRatio": "0.01",
      "openCostUpRatio": "0.01",
      "minOrderQty": "0.001",
      "maxOrderQty": "1000",
      "minOrderAmount": "5",
      "maxMarketOrderQty": "500",
      "pricePrecision": "2",
      "quantityPrecision": "3",
      "quotePrecision": "4",
      "priceMultiplier": "0.01",
      "quantityMultiplier": "0.001",
      "type": "perpetual",
      "status": "online",
      "openTime": "1700000000000",
      "offTime": "",
      "limitOpenTime": ""
    }
  ],
  "arg": {
    "instType": "usdt-futures",
    "topic": "instruments"
  },
  "action": "snapshot",
  "ts": 1736371332162
}