In Australia, Beaufort Fiduciaries Pty Ltd (ACN 162 139 871, AFSL No. 545124) provides wholesale clients with access to derivatives where the underlying assets are digital assets. Derivatives are complex, regulated financial products that are difficult to understand and may not be suitable for inexperienced investors. For eligibility, terms and conditions click here. Krak Pay is offered by Bit Trade Australia Pty Ltd (ACN 163 237 634), Authorised Representative of Flexewallet Pty Ltd (AFSL 448066). This information is general in nature and does not take into account your personal objectives, financial situation or needs. You should consider whether it is appropriate for you and read the relevant disclosure documents before making any decision.

In Australia, Beaufort Fiduciaries Pty Ltd (ACN 162 139 871, AFSL No. 545124) provides wholesale clients with access to derivatives where the underlying assets are digital assets. Derivatives are complex, regulated financial products that are difficult to understand and may not be suitable for inexperienced investors. For eligibility, terms and conditions click here. Krak Pay is offered by Bit Trade Australia Pty Ltd (ACN 163 237 634), Authorised Representative of Flexewallet Pty Ltd (AFSL 448066). This information is general in nature and does not take into account your personal objectives, financial situation or needs. You should consider whether it is appropriate for you and read the relevant disclosure documents before making any decision.

In Australia, Beaufort Fiduciaries Pty Ltd (ACN 162 139 871, AFSL No. 545124) provides wholesale clients with access to derivatives where the underlying assets are digital assets. Derivatives are complex, regulated financial products that are difficult to understand and may not be suitable for inexperienced investors. For eligibility, terms and conditions click here. Krak Pay is offered by Bit Trade Australia Pty Ltd (ACN 163 237 634), Authorised Representative of Flexewallet Pty Ltd (AFSL 448066). This information is general in nature and does not take into account your personal objectives, financial situation or needs. You should consider whether it is appropriate for you and read the relevant disclosure documents before making any decision.

In Australia, Beaufort Fiduciaries Pty Ltd (ACN 162 139 871, AFSL No. 545124) provides wholesale clients with access to derivatives where the underlying assets are digital assets. Derivatives are complex, regulated financial products that are difficult to understand and may not be suitable for inexperienced investors. For eligibility, terms and conditions click here. Krak Pay is offered by Bit Trade Australia Pty Ltd (ACN 163 237 634), Authorised Representative of Flexewallet Pty Ltd (AFSL 448066). This information is general in nature and does not take into account your personal objectives, financial situation or needs. You should consider whether it is appropriate for you and read the relevant disclosure documents before making any decision.

Subscriptions (WebSockets API)

Last updated: March 31, 2025

WebSockets subscriptions

Subscriptions requests are sent through a web socket connection. To subscribe to a feed, a web socket connection is required to establish a connection using the following URL:

wss://futures.kraken.com/ws/v1

Keeping the connection alive

In order to keep the websocket connection alive, you will need to make a ping request at least every 60 seconds. You can see this in our sample implementation.

Snapshots and updates

For ease of use, most web socket feeds first send a snapshot of the history or current state and subsequently send real-time updates.

Authentication

In order to subscription to a private feed, clients must pass a challenge which involves signing a message (see Section Sign Challenge) with the private API key. First, a message must be sent to request the challenge. Second, the solved challenge has to be passed in every subscribe and unsubscribe message that is sent.

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