One Trading API
REST APIWebSocket API
REST APIWebSocket API
  1. Book Ticker
  • Introduction
  • Authenticate
  • Subscribe
  • Ping / Pong
  • Trading
    • Introduction
    • Dead Man Switch (Auto Cancellation)
    • Create Order
    • Cancel All Orders
    • Cancel Order by Client ID
    • Cancel Order by Order ID
    • Margin Update
    • Settlement
    • Funding Payment
    • Order Booked
    • Order Rejected
    • Order Closed
    • Trade Executed
    • Order Fully Filled
    • Balance Adjustment
  • Orderbook
    • Introduction
    • Orderbook Snapshot
    • Orderbook Update
  • Price Ticks
    • Introduction
    • Price Tick
  • Book Ticker
    • Introduction
    • Book Tick
  1. Book Ticker

Introduction

The BOOK_TICKER WebSocket channel provides real-time updates for the best bid and ask prices, along with their associated quantities, for all symbols. This lightweight channel focuses solely on the most critical data points, offering a significant advantage for users who need to act quickly without processing the full order book.
Unlike the ORDER_BOOK channel, which delivers a complete and detailed view of all market orders, the BOOK_TICKER channel delivers only the best bid and ask updates. This reduces computational overhead, minimises bandwidth usage, and allows for faster data analysis.
Ideal for trading strategies that rely on top-of-book information, this channel empowers users with the speed and efficiency necessary to stay ahead in fast-moving markets.

Subscribe#

{
    "type": "SUBSCRIBE",
    "channels": [
        {
            "name": "BOOK_TICKER"
        }
    ]
}

Subscription Confirmation#

{
    "type": "SUBSCRIPTIONS",
    "channels": [
        {
            "name": "BOOK_TICKER"
        }
    ],
    "time": 1732051274299000000
}
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