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Subscription Behavior

For each WebSocket connection, subscribe to either specific markets or all markets. Every new subscription replaces the existing one.

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Subscribe to Specific Markets

To receive trade updates for specific markets, provide market names in the params array: 
{
    "id": 9,
    "method": "trades_subscribe",
    "params": [
        "ETH_BTC",
        "BTC_USDT"
    ]
}

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Subscribe to All Markets

To receive trade updates for all available markets, send an empty params array: 
{
    "id": 9,
    "method": "trades_subscribe",
    "params": []
}

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RPI Field

Trade updates may include an rpi field:
  • rpi: true - The trade involved a Retail Price Improvement (RPI) order
  • rpi: false or absent - Regular trade
RPI orders provide better execution prices than the current best bid/ask for retail traders.
Public trade updates can include executions originating from RPI orders.Public market data feeds do not expose RPI orders as visible liquidity in depth or bookTicker. RPI orders remain visible only in private active orders and in the exchange UI order book (web and mobile).