The Ultimate Guide to Deribit Websocket: Everything You Need to Know


Deribit is a popular cryptocurrency exchange that offers trading services for various cryptocurrencies such as Bitcoin, Ethereum, and Ripple. It is known for its advanced trading features, low fees, and excellent customer support. One of the key features that set Deribit apart from other exchanges is its use of websockets. In this article, we will explore what Deribit websocket is, how it works, and how you can use it to improve your trading experience on the platform.

What is Deribit Websocket?

Deribit websocket is a real-time communication protocol that allows traders to receive updates on market data, order book changes, trades, and other events on the Deribit platform. It is a popular alternative to REST APIs, which require traders to send HTTP requests to the server to receive updates. With websockets, traders can receive updates automatically without having to constantly send requests. This makes it easier to build high-frequency trading bots and other trading algorithms that require real-time data.

How Does Deribit Websocket Work?

Deribit websocket uses the WebSocket protocol, which is a standardized protocol for two-way communication between a client and a server over a single TCP connection. This allows for real-time communication between the client and server, without the need for constant polling. The client sends a request to the server to establish a connection, and the server responds with a handshake message. Once the connection is established, the server can push updates to the client as they occur.

Deribit websocket supports several types of messages, including:

  • Subscribe – used to subscribe to a specific channel or topic, such as a particular cryptocurrency or market data
  • Unsubscribe – used to unsubscribe from a specific channel or topic
  • Update – used to send updates on market data, order book changes, trades, and other events
  • Error – used to send error messages if there is an issue with the request or connection

How to Use Deribit Websocket?

Using Deribit websocket is relatively simple, but it does require some programming knowledge. You will need to use a programming language that supports websockets, such as Python, JavaScript, or Ruby. Once you have chosen a programming language, you can use a websocket library to establish a connection to the Deribit server.

Here is an example of how to subscribe to the BTC-PERPETUAL order book using Python:

import websocketimport json

def on_message(ws, message):data = json.loads(message)print(data)

def on_error(ws, error):print(error)

def on_close(ws):print("### closed ###")

def on_open(ws):subscribe_msg = {"jsonrpc": "2.0","id": 1,"method": "public/subscribe","params": {"channels": ["book.BTC-PERPETUAL.100ms"]}}ws.send(json.dumps(subscribe_msg))

if __name__ == "__main__":websocket.enableTrace(True)ws = websocket.WebSocketApp("wss://",on_message = on_message,on_error = on_error,on_close = on_close)ws.on_open = on_openws.run_forever()

This code establishes a connection to the Deribit websocket server and subscribes to the BTC-PERPETUAL order book. When an update is received, the on_message function is called, which parses the JSON data and prints it to the console. The other functions are used to handle errors and close the connection.

Advantages of Using Deribit Websocket

Deribit websocket offers several advantages over REST APIs and other communication protocols, including:

  • Real-time updates – websockets allow for real-time updates, which can be useful for high-frequency trading and other time-sensitive applications
  • Reduced latency – because websockets do not require constant polling, they can reduce latency and improve the speed of data transmission
  • Less bandwidth – websockets are more efficient than REST APIs because they only transmit data when updates occur
  • Improved scalability – websockets can handle a large number of connections simultaneously, which makes them ideal for building trading bots and other applications that require real-time data

Disadvantages of Using Deribit Websocket

While Deribit websocket offers many advantages, there are also some disadvantages to consider, including:

  • Complexity – websockets can be more complex to implement than REST APIs, and require more programming knowledge
  • Reliability – websockets can be less reliable than REST APIs, and may require additional error handling to ensure that connections are not lost
  • Security – websockets require an open connection between the client and server, which can pose security risks if not properly secured


What is the difference between REST APIs and websockets?

REST APIs require clients to send HTTP requests to the server to receive updates, while websockets allow for real-time communication between the client and server over a single TCP connection.

Can I use Deribit websocket with any programming language?

Deribit websocket can be used with any programming language that supports websockets.

Is Deribit websocket more secure than REST APIs?

Deribit websocket requires an open connection between the client and server, which can pose security risks if not properly secured. However, websockets can be more secure than REST APIs if proper security measures are taken.

What are some best practices for using Deribit websocket?

Some best practices for using Deribit websocket include:

  • Only subscribe to channels or topics that you need – this can reduce the amount of data transmitted and improve performance
  • Handle errors and disconnections – websockets can be less reliable than REST APIs, so it is important to handle errors and disconnections to ensure that your application does not fail
  • Secure your connection – use SSL/TLS encryption to secure your connection and prevent unauthorized access