Announcement of KuCoin API Upgrade (2026-08-03)
07/30/2026, 14:56:00
To further enhance the performance of KuCoin UTA-API, KuCoin will conduct non-disruptive upgrades at 08:00 (UTC) on August 3, 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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[Add] UTA REST Get Sub-account List
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[Add] UTA REST KCS Fee Deduction Management
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[Add] UTA REST Get Deposit History
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[Add] UTA REST Get Withdrawal History
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Error code update
280001 -> 400403 Account function temporarily restricted for security reasons. Contact client services for support.
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.