To improve the performance of KuCoin PRO-API, KuCoin will perform a non-disruptive upgrade on March 20, 2026, at 06:00 (UTC). The upgrade is expected to last 30 minutes.
During the upgrade period, the PRO-WebSocket private push interfaces may experience WebSocket disconnections, data loss, or delays.
During the upgrade period, the PRO-WebSocket private push interfaces may experience WebSocket disconnections, data loss, or delays.
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct a non-disruptive upgrade on March 23, 2026 at 06:00 (UTC). The upgrade is expected to last 30 minutes.
During the upgrade, the PRO WebSocket public channels may experience: WebSocket disconnections, Data delays, Possible data loss. Please ensure that your system has proper reconnection and fault-tolerance mechanisms in place.
Additionally, after the upgrade, the WebSocket frame format for JSON market data will be changed from Binary Mode to Text Mode.
If you are using a custom WebSocket frame parsing implementation, please make sure to update your parser to support Text Mode, to avoid any impact on data processing.
https://www.kucoin.com/announcement/en-announcement-of-kucoin-api-upgrade-march-23-2026
During the upgrade, the PRO WebSocket public channels may experience: WebSocket disconnections, Data delays, Possible data loss. Please ensure that your system has proper reconnection and fault-tolerance mechanisms in place.
Additionally, after the upgrade, the WebSocket frame format for JSON market data will be changed from Binary Mode to Text Mode.
If you are using a custom WebSocket frame parsing implementation, please make sure to update your parser to support Text Mode, to avoid any impact on data processing.
https://www.kucoin.com/announcement/en-announcement-of-kucoin-api-upgrade-march-23-2026
KuCoin
Announcement of KuCoin API Upgrade (2026-03-23)| KuCoin
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct a non-disruptive upgrade on March 23, 2026 at 06:00 (UTC) . The upgrade is expected to
To improve the performance of KuCoin PRO-API, KuCoin will perform a non-disruptive upgrade on March 24, 2026, at 06:00 (UTC). The upgrade is expected to last 60 minutes.
During the upgrade period, the PRO-WebSocket push interfaces may experience WebSocket disconnections, data loss, or delays.
During the upgrade period, the PRO-WebSocket push interfaces may experience WebSocket disconnections, data loss, or delays.
To improve the performance of KuCoin PRO-API, KuCoin will perform a non-disruptive upgrade on March 24, 2026, at 07:00 (UTC). The upgrade is expected to last 30 minutes.
During the upgrade period, the PRO-WebSocket order placement and cancellation interfaces may experience WebSocket disconnections, data loss, or delays
During the upgrade period, the PRO-WebSocket order placement and cancellation interfaces may experience WebSocket disconnections, data loss, or delays
To further enhance the performance of the KuCoin API, KuCoin will conduct a non-disruptive upgrade from March 27, 2026, 02:00 to March 30, 2026, 10:00 (UTC). The detailed schedule is as follows:
1. March 27, 2026, 02:00 - 03:00 (UTC)
The PROAPI WebSocket private streams may experience WebSocket disconnections, data delays, or data loss.
2. March 28, 2026, 06:00 - 07:00 (UTC)
The PROAPI + Classic WebSocket streams may experience WebSocket disconnections, data delays, or data loss.
3. From March 28, 2026, 06:00 (UTC) to March 30, 2026, 06:00 (UTC)
During the upgrade, for the PROAPI WebSocket order push under Unified Account mode, the order push interface for some trading pairs will add a new match event. After the release is completed, order push messages for all symbols under Unified Account will include the "eT=match" field, which indicates the time when the order entered the matching engine.
4. March 30, 2026, 09:00 - 10:00 (UTC)
The PROAPI WebSocket streams may experience WebSocket disconnections, data delays, or data loss.
After the upgrade, the following updates will be introduced:
1. PRO API adds Execution-lite push, supporting both Unified Account and Classic Account; "Execution push" still only supports Classic Account.
https://www.kucoin.com/docs-new/3470232w0
2. PRO API order push adds a new "match event" (Unified Account).
https://www.kucoin.com/docs-new/3470228w0
3. PRO API WebSocket BBO push will be switched to a high-speed channel to further reduce latency:
https://www.kucoin.com/docs-new/3470221w0
4. PRO API WebSocket Trade push will be switched to a high-speed channel to further reduce latency:
https://www.kucoin.com/docs-new/3470224w0
5. The accountType parameter in asset push will be adjusted from TRADING to SPOT.
If you are still using TRADING, subscriptions and pushes will continue to work normally. However, it is no longer the recommended parameter, and the related usage has been removed from the documentation:
https://www.kucoin.com/docs-new/3470231w0
https://www.kucoin.com/announcement/en-announcement-of-kucoin-api-upgrade-2026-03-27?lang=en_US
1. March 27, 2026, 02:00 - 03:00 (UTC)
The PROAPI WebSocket private streams may experience WebSocket disconnections, data delays, or data loss.
2. March 28, 2026, 06:00 - 07:00 (UTC)
The PROAPI + Classic WebSocket streams may experience WebSocket disconnections, data delays, or data loss.
3. From March 28, 2026, 06:00 (UTC) to March 30, 2026, 06:00 (UTC)
During the upgrade, for the PROAPI WebSocket order push under Unified Account mode, the order push interface for some trading pairs will add a new match event. After the release is completed, order push messages for all symbols under Unified Account will include the "eT=match" field, which indicates the time when the order entered the matching engine.
4. March 30, 2026, 09:00 - 10:00 (UTC)
The PROAPI WebSocket streams may experience WebSocket disconnections, data delays, or data loss.
After the upgrade, the following updates will be introduced:
1. PRO API adds Execution-lite push, supporting both Unified Account and Classic Account; "Execution push" still only supports Classic Account.
https://www.kucoin.com/docs-new/3470232w0
2. PRO API order push adds a new "match event" (Unified Account).
https://www.kucoin.com/docs-new/3470228w0
3. PRO API WebSocket BBO push will be switched to a high-speed channel to further reduce latency:
https://www.kucoin.com/docs-new/3470221w0
4. PRO API WebSocket Trade push will be switched to a high-speed channel to further reduce latency:
https://www.kucoin.com/docs-new/3470224w0
5. The accountType parameter in asset push will be adjusted from TRADING to SPOT.
If you are still using TRADING, subscriptions and pushes will continue to work normally. However, it is no longer the recommended parameter, and the related usage has been removed from the documentation:
https://www.kucoin.com/docs-new/3470231w0
https://www.kucoin.com/announcement/en-announcement-of-kucoin-api-upgrade-2026-03-27?lang=en_US
KuCoin API Notification
To further enhance the performance of the KuCoin API, KuCoin will conduct a non-disruptive upgrade from March 27, 2026, 02:00 to March 30, 2026, 10:00 (UTC). The detailed schedule is as follows: 1. March 27, 2026, 02:00 - 03:00 (UTC) The PROAPI WebSocket…
Kucoin has completed a non-downtime upgrade. The specific changes are as follows:
1. PRO API adds Execution-lite push, supporting both Unified Account and Classic Account; "Execution push" still only supports Classic Account.
https://www.kucoin.com/docs-new/3470264w0
2. PRO API order push adds a new "match event" (Unified Account).
https://www.kucoin.com/docs-new/3470228w0
3. PRO API WebSocket BBO push will be switched to a high-speed channel to further reduce latency:
https://www.kucoin.com/docs-new/3470221w0
4. PRO API WebSocket Trade push will be switched to a high-speed channel to further reduce latency:
https://www.kucoin.com/docs-new/3470224w0
5. The accountType parameter in asset push will be adjusted from TRADING to SPOT.
If you are still using TRADING, subscriptions and pushes will continue to work normally. However, it is no longer the recommended parameter, and the related usage has been removed from the documentation:
https://www.kucoin.com/docs-new/3470231w0
https://www.kucoin.com/docs-new/change-log#20260330
1. PRO API adds Execution-lite push, supporting both Unified Account and Classic Account; "Execution push" still only supports Classic Account.
https://www.kucoin.com/docs-new/3470264w0
2. PRO API order push adds a new "match event" (Unified Account).
https://www.kucoin.com/docs-new/3470228w0
3. PRO API WebSocket BBO push will be switched to a high-speed channel to further reduce latency:
https://www.kucoin.com/docs-new/3470221w0
4. PRO API WebSocket Trade push will be switched to a high-speed channel to further reduce latency:
https://www.kucoin.com/docs-new/3470224w0
5. The accountType parameter in asset push will be adjusted from TRADING to SPOT.
If you are still using TRADING, subscriptions and pushes will continue to work normally. However, it is no longer the recommended parameter, and the related usage has been removed from the documentation:
https://www.kucoin.com/docs-new/3470231w0
https://www.kucoin.com/docs-new/change-log#20260330
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 08:00 (UTC) and 12:00 (UTC) on April 1, 2026. Each upgrade is expected to last 60 minutes. During the upgrade periods, the PRO WebSocket push service may experience WebSocket disconnections, data loss, or delays.
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 03:00 (UTC) on April 2, 2026. Each upgrade is expected to last 60 minutes. During the upgrade periods, the PRO WebSocket push service may experience WebSocket disconnections, data loss, or delays.
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 07:00 (UTC) on April 05, 2026. Each upgrade is expected to last 60 minutes. During the upgrade periods, the PRO WebSocket public push service may experience WebSocket disconnections, data loss, or delays.
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 07:00 (UTC) on April 6, 2026, upgrade is expected to last 30 minutes. During the upgrade periods, the PRO WebSocket Add/cancel order may experience WebSocket disconnections, data loss, or delays.
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 08:00 (UTC) on April 9, 2026, upgrade is expected to last 30 minutes. During the upgrade periods, the PRO WebSocket Add/cancel order may experience WebSocket disconnections, data loss, or delays.
KuCoin API Notification
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 08:00 (UTC) on April 9, 2026, upgrade is expected to last 30 minutes. During the upgrade periods, the PRO WebSocket Add/cancel order may experience WebSocket…
KuCoin API has completed this non-downtime upgrade. The optimization details are as follows:
1. PROAPI Get Position List Endpoint(UTA)
1) Added new request fields: "pageSize" and "pageNumber"
2) Added a new response field: "liquidationPrice"
https://www.kucoin.com/docs-new/rest/ua/get-position-list-uta
2. Added the "Get Supported Settlement Currencies for Third-Party Custody" endpoint
https://www.kucoin.com/docs-new/rest/ua/get-oes-settlement-currency
3. Added the "Get Currency Quota of Third-Party Custody Account" endpoint
https://www.kucoin.com/docs-new/rest/ua/get-oes-custody-quota
1. PROAPI Get Position List Endpoint(UTA)
1) Added new request fields: "pageSize" and "pageNumber"
2) Added a new response field: "liquidationPrice"
https://www.kucoin.com/docs-new/rest/ua/get-position-list-uta
2. Added the "Get Supported Settlement Currencies for Third-Party Custody" endpoint
https://www.kucoin.com/docs-new/rest/ua/get-oes-settlement-currency
3. Added the "Get Currency Quota of Third-Party Custody Account" endpoint
https://www.kucoin.com/docs-new/rest/ua/get-oes-custody-quota
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 08:00 (UTC) on April 15, 2026, upgrade is expected to last 60 minutes. During the upgrade periods, the PROAPI WebSocket may experience WebSocket disconnections, data loss, or delays.
In addition, KuCoin plans to continue with subsequent rolling upgrades on April 19, 2026 and April 27, 2026 at 08:00 (UTC). Details of these upgrades will be announced separately in upcoming announcements.
In addition, KuCoin plans to continue with subsequent rolling upgrades on April 19, 2026 and April 27, 2026 at 08:00 (UTC). Details of these upgrades will be announced separately in upcoming announcements.
To enhance the trading experience for KuCoin PRO-API users,
KuCoin will conduct a zero-downtime upgrade at 08:00 UTC on April 19, 2026. The upgrade will last 120 minutes.
During the upgrade:
WebSocket disconnections, data loss, or latency may occur on PRO-WebSocket push interfaces.
After the upgrade:
1. [Modify] Pro WebSocket ticker push (https://www.kucoin.com/docs-new/3470222w0)
Added request parameter: symbols, supporting batch subscription of multiple symbols (supports SPOT and FUTURES).
2. [Modify] Pro REST API for querying current funding rate (https://www.kucoin.com/docs-new/rest/ua/get-current-funding-rate)
Added response fields:
currentGranularity: Settlement cycle of the funding fee (in milliseconds)
newGranularity: Latest modified funding fee cycle (in milliseconds)
newGranularityStartTime: Timestamp when the latest adjusted funding fee cycle takes effect
3. [Add] Pro REST API for querying private funding fee history (https://www.kucoin.com/docs-new/rest/ua/get-private-funding-fee-history)
4. PROAPI supports unified account spot cross margin-related interfaces (official launch date to be determined, only pre-update for API interfaces):
1) [Modify] Pro REST API for querying account currency assets (https://www.kucoin.com/docs-new/rest/ua/get-account-currency-assets-uta). Added response field: potentialBorrow (potential borrowable amount). Only applicable to Unified accounts (in currency amount).
2) [Add] Pro REST API for querying borrow interest rates, limits and interest-free limits (https://www.kucoin.com/docs-new/rest/ua/get-borrowing-rates-and-limits)
3) [Add] Pro REST API for querying information on margin borrowable currencies (https://www.kucoin.com/docs-new/rest/ua/get-borrowable-currencies)
4) [Add] Pro REST API for modifying cross margin leverage (https://www.kucoin.com/docs-new/3476792e0)
5) [Add] Pro REST API for querying leverage (https://www.kucoin.com/docs-new/3476794e0)
6) [Modify] Pro WebSocket margin change push (https://www.kucoin.com/zh-hant/docs-new/3470245w0). Added response fields:
c: currency, only effective for cross margin
mM: marginMode, supports CROSS/ISOLATED
tT: tradeType, supports FUTURES/MARGIN
7) [Modify] Pro WebSocket balance push (https://www.kucoin.com/docs-new/3470231w0). Added response field: potentialBorrow (potential borrowable amount). Only applicable to Unified accounts (in currency amount).
8) [Modify] Under Pro REST UTA account mode:
Added enum MARGIN to request parameter tradeType; marginMode supports CROSS only, ISOLATED is not yet supported. Affected API:
Place order (https://www.kucoin.com/docs-new/rest/ua/place-order)
Cancel order (https://www.kucoin.com/docs-new/rest/ua/cancel-order)
Batch cancel orders by ID (https://www.kucoin.com/docs-new/rest/ua/batch-cancel-order-by-id)
Get order details (https://www.kucoin.com/docs-new/rest/ua/get-order-details)
Get order history (https://www.kucoin.com/docs-new/rest/ua/get-order-history)
Get trade history (https://www.kucoin.com/docs-new/rest/ua/get-trade-history)
Get open order list (https://www.kucoin.com/docs-new/rest/ua/get-open-order-list)
9) [Modify] Under Pro WebSocket UTA account mode:
Added enum UNIFIED to subscription parameter tradeType.
Private channels support simultaneous push for UTA Spot & Margin and separate push for UTA FUTURES:
orderAll, order (https://www.kucoin.com/docs-new/3470228w0)
Execution lite (https://www.kucoin.com/docs-new/3470264w0)
In addition, KuCoin will conduct another zero-downtime upgrade at 08:00 UTC on April 27, 2026.
Details of the upgrade will be announced in a separate notice.
KuCoin will conduct a zero-downtime upgrade at 08:00 UTC on April 19, 2026. The upgrade will last 120 minutes.
During the upgrade:
WebSocket disconnections, data loss, or latency may occur on PRO-WebSocket push interfaces.
After the upgrade:
1. [Modify] Pro WebSocket ticker push (https://www.kucoin.com/docs-new/3470222w0)
Added request parameter: symbols, supporting batch subscription of multiple symbols (supports SPOT and FUTURES).
2. [Modify] Pro REST API for querying current funding rate (https://www.kucoin.com/docs-new/rest/ua/get-current-funding-rate)
Added response fields:
currentGranularity: Settlement cycle of the funding fee (in milliseconds)
newGranularity: Latest modified funding fee cycle (in milliseconds)
newGranularityStartTime: Timestamp when the latest adjusted funding fee cycle takes effect
3. [Add] Pro REST API for querying private funding fee history (https://www.kucoin.com/docs-new/rest/ua/get-private-funding-fee-history)
4. PROAPI supports unified account spot cross margin-related interfaces (official launch date to be determined, only pre-update for API interfaces):
1) [Modify] Pro REST API for querying account currency assets (https://www.kucoin.com/docs-new/rest/ua/get-account-currency-assets-uta). Added response field: potentialBorrow (potential borrowable amount). Only applicable to Unified accounts (in currency amount).
2) [Add] Pro REST API for querying borrow interest rates, limits and interest-free limits (https://www.kucoin.com/docs-new/rest/ua/get-borrowing-rates-and-limits)
3) [Add] Pro REST API for querying information on margin borrowable currencies (https://www.kucoin.com/docs-new/rest/ua/get-borrowable-currencies)
4) [Add] Pro REST API for modifying cross margin leverage (https://www.kucoin.com/docs-new/3476792e0)
5) [Add] Pro REST API for querying leverage (https://www.kucoin.com/docs-new/3476794e0)
6) [Modify] Pro WebSocket margin change push (https://www.kucoin.com/zh-hant/docs-new/3470245w0). Added response fields:
c: currency, only effective for cross margin
mM: marginMode, supports CROSS/ISOLATED
tT: tradeType, supports FUTURES/MARGIN
7) [Modify] Pro WebSocket balance push (https://www.kucoin.com/docs-new/3470231w0). Added response field: potentialBorrow (potential borrowable amount). Only applicable to Unified accounts (in currency amount).
8) [Modify] Under Pro REST UTA account mode:
Added enum MARGIN to request parameter tradeType; marginMode supports CROSS only, ISOLATED is not yet supported. Affected API:
Place order (https://www.kucoin.com/docs-new/rest/ua/place-order)
Cancel order (https://www.kucoin.com/docs-new/rest/ua/cancel-order)
Batch cancel orders by ID (https://www.kucoin.com/docs-new/rest/ua/batch-cancel-order-by-id)
Get order details (https://www.kucoin.com/docs-new/rest/ua/get-order-details)
Get order history (https://www.kucoin.com/docs-new/rest/ua/get-order-history)
Get trade history (https://www.kucoin.com/docs-new/rest/ua/get-trade-history)
Get open order list (https://www.kucoin.com/docs-new/rest/ua/get-open-order-list)
9) [Modify] Under Pro WebSocket UTA account mode:
Added enum UNIFIED to subscription parameter tradeType.
Private channels support simultaneous push for UTA Spot & Margin and separate push for UTA FUTURES:
orderAll, order (https://www.kucoin.com/docs-new/3470228w0)
Execution lite (https://www.kucoin.com/docs-new/3470264w0)
In addition, KuCoin will conduct another zero-downtime upgrade at 08:00 UTC on April 27, 2026.
Details of the upgrade will be announced in a separate notice.
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 04:00 (UTC) on April 20, 2026, upgrade is expected to last 10 minutes. During the upgrade periods, the PRO REST Public Market API may experience data loss or inaccurate data. Influenced API:
https://api.kucoin.com/api/ua/v1/market/ticker
https://api.kucoin.com/api/v1/market/allTickers
https://api.kucoin.com/api/v1/market/stats
https://api.kucoin.com/api/ua/v1/market/ticker
https://api.kucoin.com/api/v1/market/allTickers
https://api.kucoin.com/api/v1/market/stats
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct non-disruptive upgrades at 08:00 (UTC) on April 27, 2026, upgrade is expected to last 90 minutes.
During the upgrade periods, the Pro WebSocket may experience temporary disconnections, data loss, or delays.
During the upgrade periods, the Pro WebSocket may experience temporary disconnections, data loss, or delays.
🚀 Invitation: KuCoin Spot Listing Alerts for Market Makers
Dear Market Making Partners,
Stay ahead of the curve and optimize your liquidity strategies! We invite you to subscribe to our official Spot Listing Notification Channel. Whenever a new token or trading pair is listed on KuCoin, you will receive instant, real-time alerts containing all the critical technical parameters and auction timelines you need to prepare your systems.
👉 https://t.me/+nTceSnPb6zc2YWY1
Dear Market Making Partners,
Stay ahead of the curve and optimize your liquidity strategies! We invite you to subscribe to our official Spot Listing Notification Channel. Whenever a new token or trading pair is listed on KuCoin, you will receive instant, real-time alerts containing all the critical technical parameters and auction timelines you need to prepare your systems.
👉 https://t.me/+nTceSnPb6zc2YWY1
To further enhance the performance of KuCoin PRO-API, KuCoin will conduct a non-disruptive upgrade at 07:00 (UTC) on May 15, 2026. The upgrade is expected to last 180 minutes.
During the upgrade period, users may experience the following impacts:
The PRO WebSocket may experience temporary disconnections, data loss, or delays. Users may reconnect to the WebSocket to restore the connection.
A small number of PRO API requests may experience temporary issues during this period, which are expected to recover within 5 seconds.
Public market data APIs may experience temporary data loss, inaccurate data, or delays. The affected endpoints include:
https://api.kucoin.com/api/ua/v1/market/ticker
https://api.kucoin.com/api/v1/market/allTickers
https://api.kucoin.com/api/v1/market/stats
After the upgrade, the following updates will be introduced:
[Modify] Pro Websocket Private Channel Order (https://www.kucoin.com/docs-new/3470228w0). Added new enum value MATCH for the response field eT, supporting pushing MATCH events for UTA FUTURES trading
[Modify] Pro REST Get Position List (UTA) (https://www.kucoin.com/docs-new/rest/ua/get-position-list-uta). Added response field:
adlPercentage：ADL ranking percentage of the futures position. For example, a value of 0.12 represents 12%.
[Modify] Pro Websocket Position Push (https://www.kucoin.com/zh-hant/docs-new/3470243w0). Added response field:
adl: ADL ranking percentage of the futures position. For example, a value of 0.12 represents 12%.
[Modify] Pro REST Batch Cancel Orders by Symbol (https://www.kucoin.com/docs-new/rest/ua/batch-cancel-order-by-symbol). Added new enum value:MARGIN
[Modify] Classic REST Get Trade History (https://www.kucoin.com/docs-new/rest/futures-trading/orders/get-trade-history). For liquidation orders, the tradeType will return the value: liquid
[Add] Pro REST Get API Key Info (https://www.kucoin.com/docs-new/rest/ua/get-apikey-info)
[Add] Pro REST Add Sub-Account (https://www.kucoin.com/docs-new/rest/ua/add-sub-account)
[Add] Pro REST Add Sub-Account API (https://www.kucoin.com/docs-new/rest/ua/add-sub-account-api)
[Add] Pro REST Delete Sub-Account API (https://www.kucoin.com/docs-new/rest/ua/delete-sub-account-api)
[Add] Pro REST Get Deposit Address (https://www.kucoin.com/docs-new/rest/ua/get-deposit-address)
[Add] Pro REST Get Withdrawal Quotas (https://www.kucoin.com/docs-new/rest/ua/get-withdrawal-quotas)
[Add] Pro REST Withdraw (https://www.kucoin.com/docs-new/rest/ua/withdrawal)
[Add] Pro REST Cancel Withdrawal (https://www.kucoin.com/docs-new/rest/ua/cancel-withdrawal)
[Add] Pro REST Get KYC Region (https://www.kucoin.com/docs-new/rest/ua/get-kyc-region)
In addition, KuCoin will launch an Automatic Load Balancing to further improve API service stability and latency performance.
The system will dynamically balance traffic and allocate resources based on the real-time load conditions of each shard, helping users achieve more stable connections and improved latency performance.
During future load balancing switches, some WebSocket connections may be temporarily disconnected by the server. These switches are expected to occur at most once or twice per week. Users may reconnect to restore normal connectivity.
In case of significant market volatility prior to the scheduled time, the upgrade may be postponed, and a separate announcement will be made accordingly.
For further API discussions or feedback, please join our official API Telegram group:
https://t.me/KuCoin_API or contact us via email at: api@kucoin.com
We sincerely apologize for any inconvenience caused. Thank you for your continued support of the KuCoin API!
KuCoin API Team
During the upgrade period, users may experience the following impacts:
The PRO WebSocket may experience temporary disconnections, data loss, or delays. Users may reconnect to the WebSocket to restore the connection.
A small number of PRO API requests may experience temporary issues during this period, which are expected to recover within 5 seconds.
Public market data APIs may experience temporary data loss, inaccurate data, or delays. The affected endpoints include:
https://api.kucoin.com/api/ua/v1/market/ticker
https://api.kucoin.com/api/v1/market/allTickers
https://api.kucoin.com/api/v1/market/stats
After the upgrade, the following updates will be introduced:
[Modify] Pro Websocket Private Channel Order (https://www.kucoin.com/docs-new/3470228w0). Added new enum value MATCH for the response field eT, supporting pushing MATCH events for UTA FUTURES trading
[Modify] Pro REST Get Position List (UTA) (https://www.kucoin.com/docs-new/rest/ua/get-position-list-uta). Added response field:
adlPercentage：ADL ranking percentage of the futures position. For example, a value of 0.12 represents 12%.
[Modify] Pro Websocket Position Push (https://www.kucoin.com/zh-hant/docs-new/3470243w0). Added response field:
adl: ADL ranking percentage of the futures position. For example, a value of 0.12 represents 12%.
[Modify] Pro REST Batch Cancel Orders by Symbol (https://www.kucoin.com/docs-new/rest/ua/batch-cancel-order-by-symbol). Added new enum value:MARGIN
[Modify] Classic REST Get Trade History (https://www.kucoin.com/docs-new/rest/futures-trading/orders/get-trade-history). For liquidation orders, the tradeType will return the value: liquid
[Add] Pro REST Get API Key Info (https://www.kucoin.com/docs-new/rest/ua/get-apikey-info)
[Add] Pro REST Add Sub-Account (https://www.kucoin.com/docs-new/rest/ua/add-sub-account)
[Add] Pro REST Add Sub-Account API (https://www.kucoin.com/docs-new/rest/ua/add-sub-account-api)
[Add] Pro REST Delete Sub-Account API (https://www.kucoin.com/docs-new/rest/ua/delete-sub-account-api)
[Add] Pro REST Get Deposit Address (https://www.kucoin.com/docs-new/rest/ua/get-deposit-address)
[Add] Pro REST Get Withdrawal Quotas (https://www.kucoin.com/docs-new/rest/ua/get-withdrawal-quotas)
[Add] Pro REST Withdraw (https://www.kucoin.com/docs-new/rest/ua/withdrawal)
[Add] Pro REST Cancel Withdrawal (https://www.kucoin.com/docs-new/rest/ua/cancel-withdrawal)
[Add] Pro REST Get KYC Region (https://www.kucoin.com/docs-new/rest/ua/get-kyc-region)
In addition, KuCoin will launch an Automatic Load Balancing to further improve API service stability and latency performance.
The system will dynamically balance traffic and allocate resources based on the real-time load conditions of each shard, helping users achieve more stable connections and improved latency performance.
During future load balancing switches, some WebSocket connections may be temporarily disconnected by the server. These switches are expected to occur at most once or twice per week. Users may reconnect to restore normal connectivity.
In case of significant market volatility prior to the scheduled time, the upgrade may be postponed, and a separate announcement will be made accordingly.
For further API discussions or feedback, please join our official API Telegram group:
https://t.me/KuCoin_API or contact us via email at: api@kucoin.com
We sincerely apologize for any inconvenience caused. Thank you for your continued support of the KuCoin API!
KuCoin API Team
KuCoin will support the ticker change of U token to the UNION token. We will automatically complete the U swap to UNION for U holders on KuCoin.
KuCoin Trading Bot will delist U/USDT at 9:00 on May 21, 2026 (UTC), including Spot Grid, AI Spot Trend, Spot Martingale, Infinity Grid, DCA, Spot Grid AI Plus and Smart Rebalance. Users are advised to shut down the running Trading Bots before the time above. If the user fails to close the bot before the time above, the system will automatically shut down the relevant trading bot for the user.
The withdrawal and deposit services for U will be closed at 8:00 on May 22, 2026 (UTC).
The trading service for U/USDT trading pair will be suspended at 10:00 on May 22, 2026 (UTC). We recommend that you cancel your pending orders of U as soon as possible.
From 7:00 to 8:00 on May 25 (UTC), 2026, the PRO&Classic WebSocket may experience temporary disconnections, data loss, or delays. Users may reconnect to the WebSocket to restore the connection.
To complete the change, we will convert the U to UNION at a ratio of 1:1 (1 U = 1 UNION). Related follow-ups to this subject will be announced separately as soon as possible.
After the migration is complete, please ensure you select UNION when depositing on-chain assets to KuCoin.
https://www.kucoin.com/announcement/en-kucoin-will-support-the-ticker-change-of-union-u-to-union
KuCoin Trading Bot will delist U/USDT at 9:00 on May 21, 2026 (UTC), including Spot Grid, AI Spot Trend, Spot Martingale, Infinity Grid, DCA, Spot Grid AI Plus and Smart Rebalance. Users are advised to shut down the running Trading Bots before the time above. If the user fails to close the bot before the time above, the system will automatically shut down the relevant trading bot for the user.
The withdrawal and deposit services for U will be closed at 8:00 on May 22, 2026 (UTC).
The trading service for U/USDT trading pair will be suspended at 10:00 on May 22, 2026 (UTC). We recommend that you cancel your pending orders of U as soon as possible.
From 7:00 to 8:00 on May 25 (UTC), 2026, the PRO&Classic WebSocket may experience temporary disconnections, data loss, or delays. Users may reconnect to the WebSocket to restore the connection.
To complete the change, we will convert the U to UNION at a ratio of 1:1 (1 U = 1 UNION). Related follow-ups to this subject will be announced separately as soon as possible.
After the migration is complete, please ensure you select UNION when depositing on-chain assets to KuCoin.
https://www.kucoin.com/announcement/en-kucoin-will-support-the-ticker-change-of-union-u-to-union
KuCoin
KuCoin Will Support the Ticker Change of Union (U) to UNION| KuCoin
KuCoin will support the ticker change of U token to the UNION token. We will automatically complete the U swap to UNION for U holders on KuCoin . The arrangemen
👉👉Important Upgrade👈👈
To further enhance the stability, fairness, and accuracy of the funding rate mechanism in reflecting real market supply and demand, KuCoin Futures will gradually adopt a new funding rate calculation algorithm. The first batch of 140 perpetual contracts is scheduled to be migrated on 08:00 on June 1, 2026 (UTC).
For more details, please refer to the announcement:
https://www.kucoin.com/announcement/en-important-funding-rate-calculation-update-for-several-perpetual-contracts-2026-06-01
To further enhance the stability, fairness, and accuracy of the funding rate mechanism in reflecting real market supply and demand, KuCoin Futures will gradually adopt a new funding rate calculation algorithm. The first batch of 140 perpetual contracts is scheduled to be migrated on 08:00 on June 1, 2026 (UTC).
For more details, please refer to the announcement:
https://www.kucoin.com/announcement/en-important-funding-rate-calculation-update-for-several-perpetual-contracts-2026-06-01
KuCoin
Important: Funding Rate Calculation Update for several Perpetual Contracts (2026-06-01)| KuCoin
Dear KuCoin Users, To further enhance the stability, fairness, and accuracy of the funding rate mechanism in reflecting real market supply and demand, KuCoin Fu
To improve WebSocket connection establishment and authentication efficiency, KuCoin will optimize the PRO WebSocket handshake and authentication flow.
With this optimization, the handshake and authentication stages will be changed from synchronous processing to asynchronous processing, reducing blocking behavior and improving the number of authentication requests that can be processed per unit of time.
In addition, when a WebSocket connection fails authentication due to invalid, expired, or unauthorized credentials, the server will return an “auth failed” message via WebSocket frame, helping clients quickly identify the issue and take appropriate action.
This optimization will not affect successfully authenticated WebSocket connections. We recommend that API users add handling logic for the authentication failure message where applicable.
With this optimization, the handshake and authentication stages will be changed from synchronous processing to asynchronous processing, reducing blocking behavior and improving the number of authentication requests that can be processed per unit of time.
In addition, when a WebSocket connection fails authentication due to invalid, expired, or unauthorized credentials, the server will return an “auth failed” message via WebSocket frame, helping clients quickly identify the issue and take appropriate action.
This optimization will not affect successfully authenticated WebSocket connections. We recommend that API users add handling logic for the authentication failure message where applicable.