Derivatives WebSocket

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Endpoint

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

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Keeping the connection alive

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Snapshots and updates

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Authentication

1. Connect to the WebSocket endpoint.
2. Send a request to obtain a challenge (using your api_key).
3. Sign the challenge with your api_secret (see Sign challenge below).
4. Include both original_challenge and signed_challenge in every subscribe/unsubscribe message for private feeds.

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Sign challenge

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Signing steps

1. Hash the challenge with SHA-256
2. Base64-decode your api_secret
3. Hash the result of step 1 with the result of step 2 using HMAC-SHA-512
4. Base64-encode the result of step 3

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Example

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Subscribe request

{
  "event": "subscribe",
  "feed": "ticker",
  "product_ids": [
    "PI_XBTUSD",
    "FI_ETHUSD_210625"
  ]
}

{
  "event": "subscribe",
  "feed": "open_orders",
  "api_key": "<your_api_key>",
  "original_challenge": "<challenge>",
  "signed_challenge": "<signed_challenge>"
}