🧩 API Changelog – 08 October 2025

API Updates & Announcements
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This post covers the latest updates to our API and WebSocket systems as part of our ongoing effort to improve performance, security, and developer experience.

Please review the details below to ensure your integrations remain compatible and up to date.

API Changelog – 08 October 2025

  1. Added new websocket authentication method, {“type”:“key-auth”}, which includes new formats of request and responses.

  2. Previous websocket authentication method, {“type”:“auth”}, is now marked as deprecated. This method will stop working after 31st December 2025, users are requested to migrate to the newer websocket authentication.

  3. We will be deprecating support for historical candlestick OHLC resolution 7d, 2w and 30d from 18th October 2025. The REST API /history/candles and websocket public channel candlesticks will stop supporting these resolutions. These resolutions have been removed from the documentation.

  4. ‘client_order_id’ parameter in all Orders API is now restricted to max 32 length. e.g. REST API POST /orders parameter ‘client_order_id’ can be max 32 length string.

Action Required

  • Update authentication flow to use the new key-auth method.

  • Review any scripts or bots referencing deprecated OHLC resolutions.

  • Ensure your client_order_id parameter complies with the new limit.

These updates improve security, consistency, and system performance across our API ecosystem while preparing for future scalability.

You can also track all future API changes and release notes directly on our documentation site: