Announcement of KuCoin API Upgrade (2026-08-27)
08/25/2026, 10:30:00
To further enhance the performance of KuCoin UTA-API, KuCoin will conduct zero-downtime upgrades at 06:00 (UTC) on August 27, 2026, upgrade is expected to last 120 minutes.
During the upgrade periods, the UTA WebSocket may experience temporary disconnections, data loss, or delays.
If any of the above issues occur, users may reconnect to the WebSocket to restore the connection.
After the upgrade, the following updates will be introduced:
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[Modify] For all UTA public WebSocket connections (FUTURES and SPOT), the welcome response sent after a successful connection now returns "data":"welcome" rather than "message":"welcome". A new pingTimeout field is also included, which indicates the estimated interval (in ms) within which the client should receive a pong message from the server.
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[Modify] For all UTA public Websocket connections and private connections, extra spaces between parameters inside JSON body of push data will be removed.
For more information about the API, please join the official
You may also contact us via email at: api@kucoin.com
We sincerely apologize for any inconvenience this adjustment may cause and appreciate your continued support and trust in the KuCoin API.