KuCoin Postpones UTA API WebSocket Changes
KuCoin delays planned UTA WebSocket updates; existing format remains until new date.
Source-checked briefing: prepared from the official notice cited below and checked for source, date, duplication, and risk language. No individual editor review is claimed. Methodology
KuCoin announced on August 27, 2026, that it is postponing previously scheduled UTA API WebSocket changes. The updates, originally set to go live at 06:00 UTC on August 27, 2026, included changing the welcome response from "message":"welcome" to "data":"welcome", adding a pingTimeout field, and removing extra spaces in JSON push data. The exchange states that existing integrations remain unchanged and no immediate action is required. A new launch date will be announced separately.
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KuCoin postponed UTA API WebSocket updates originally scheduled for 06:00 UTC on August 27, 2026.
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The postponed changes include changing the welcome response from "message":"welcome" to "data":"welcome".
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A new pingTimeout field was to be added to UTA public WebSocket connections (Futures and Spot).
Key timeline
Original go-live time for UTA WebSocket changes (postponed).
KuCoin publishes postponement announcement.
Who may be affected
- Developers using UTA Public WebSocket connections (Futures and Spot).
- Developers using UTA private WebSocket connections.
- Users who already adapted integrations based on the previous announcement.
Impact analysis
The postponement means that the previously announced WebSocket changes will not take effect on the original date. For developers, this means that any integrations built to expect the new welcome response format or the removal of extra spaces will not encounter those changes yet. The existing welcome response format remains in effect, so integrations relying on the current format will continue to work. Users who already made adaptations based on the previous announcement are advised to ensure their integration still supports the existing format, as the new format is not yet active. No immediate action is required for users who have not yet adapted. The delay provides additional time for preparation but also introduces uncertainty about the final implementation date.
What the announcement does not say
The announcement does not specify the new launch date or the reason for the postponement beyond 'further evaluation'. It also does not clarify whether the changes will be implemented exactly as originally described or if further modifications will be made.
Risk notes
- Integrations that were updated to expect the new welcome response format may fail if they do not also support the existing format.
- The postponement could lead to a longer period of maintaining compatibility with both old and new formats, increasing development overhead.
- The exact timing of the new launch is unknown, so developers should monitor KuCoin announcements for updates.
- This article is for verification of official exchange announcements only and does not constitute investment or trading advice.
This article is for information only and is not investment, legal, or tax advice. Digital assets are volatile and may result in loss of principal.
Frequently asked questions
Do I need to take any action now?
According to KuCoin, users do not need to make immediate changes to existing integrations. If you already adapted based on the previous announcement, ensure your integration still supports the existing WebSocket welcome response format.
When will the new WebSocket changes go live?
The new launch date has not been announced. KuCoin states it will be announced separately with advance notice.
Official sources
Collected material is used only for fact checking. If this page differs from the original announcement, the official page controls.