In order to improve the performance of KuCoin Futures API, KuCoin will carry out a live upgrade at 07:00 (UTC) on February 19, 2026. The upgrade is expected to last 120 minutes. During the upgrade, the Classic Futures WebSocket feed may experience disconnections, latency, or data loss.
https://www.kucoin.com/announcement/en-announcement-of-kucoin-api-upgrade-february-19-2026
https://www.kucoin.com/announcement/en-announcement-of-kucoin-api-upgrade-february-19-2026
KuCoin
Announcement of KuCoin API Upgrade - February 19, 2026| KuCoin
Dear KuCoin API Users, In order to improve the performance of KuCoin Futures API, KuCoin will carry out a live upgrade at 07:00 (UTC) on February 19, 2026 . The
In order to improve the performance of KuCoin Futures API, KuCoin will carry out a live upgrade at 07:00 (UTC) on February 9, 2026. The upgrade is expected to last 120 minutes. During the upgrade, the Classic Futures WebSocket feed may experience disconnections, latency, or data loss.
https://www.kucoin.com/announcement/en-announcement-of-kucoin-api-upgrade-february-9-2026
https://www.kucoin.com/announcement/en-announcement-of-kucoin-api-upgrade-february-9-2026
KuCoin
Announcement of KuCoin API Upgrade - February 9, 2026| KuCoin
Dear KuCoin API Users, In order to improve the performance of KuCoin Futures API, KuCoin will carry out a live upgrade at 07:00 (UTC) on February 9, 2026 . The
In order to improve the performance of KuCoin API, KuCoin will carry out a live upgrade at 13:00 (UTC) on February 23, 2026. The upgrade is expected to last 60 minutes. During the upgrade, the Public WebSocket feed may experience disconnections, latency, or data loss.
If there is significant market volatility prior to the upgrade, we will postpone the upgrade based on market conditions and make an announcement accordingly.
If there is significant market volatility prior to the upgrade, we will postpone the upgrade based on market conditions and make an announcement accordingly.
👉Important Update: Adjustment of Liquidation LTV for Margin Trading👈
KuCoin will upgrade the Margin system on March 5, 2026 (UTC):
Liquidation LTV adjusted from 97% → 95%
Margin Call threshold adjusted from 95% → 92%
Optimized liquidation logic with updated net liability calculation
Please review your margin positions in advance to avoid potential liquidation.
Official announcements:
https://www.kucoin.com/announcement/hk-kucoin-margin-notice-liquidation-system-upgrade-260224
https://www.kucoin.com/announcement/kucoin-margin-impotant-notice-260213
KuCoin will upgrade the Margin system on March 5, 2026 (UTC):
Liquidation LTV adjusted from 97% → 95%
Margin Call threshold adjusted from 95% → 92%
Optimized liquidation logic with updated net liability calculation
Please review your margin positions in advance to avoid potential liquidation.
Official announcements:
https://www.kucoin.com/announcement/hk-kucoin-margin-notice-liquidation-system-upgrade-260224
https://www.kucoin.com/announcement/kucoin-margin-impotant-notice-260213
KuCoin
Announcement on the Optimization and Upgrade of the Margin Trading Liquidation System| KuCoin
Dear KuCoin Users, To enhance the safety and experience of your trading, we will be optimizing and upgrading the liquidation system for our platform's Margin tr
In order to improve the performance of KuCoin PRO-API, KuCoin will carry out a live upgrade at 09:00 (UTC) on March 04, 2026. The upgrade time will be 30 minutes. The private websocket push might cause loss or delay during the upgrade period.
In order to improve the performance of KuCoin PRO-API, KuCoin will carry out a live upgrade at 03:00 (UTC) on March 05, 2026. The upgrade time will be 30 minutes. The private websocket push might cause loss or delay during the upgrade period.
In order to improve the performance of KuCoin PRO-API, KuCoin will carry out a live upgrade at 07:00 (UTC) on March 05, 2026. The upgrade time will be 30 minutes. The private websocket push might cause loss or delay during the upgrade period.
SPOT Margin HF Migration Completion Announcement
KuCoin Margin API high-frequency (HF) migration was fully completed at 07:00:00 on March 04, 2026 (UTC). All low-frequency (LF) accounts for SPOT Margin have been migrated to HF accounts. Effective immediately, please use the HF APIs (endpoints listed in the API documentation) for SPOT Margin trading and related operations.
https://www.kucoin.com/announcement/en-spot-margin-hf-migration-completion-announcement
KuCoin Margin API high-frequency (HF) migration was fully completed at 07:00:00 on March 04, 2026 (UTC). All low-frequency (LF) accounts for SPOT Margin have been migrated to HF accounts. Effective immediately, please use the HF APIs (endpoints listed in the API documentation) for SPOT Margin trading and related operations.
https://www.kucoin.com/announcement/en-spot-margin-hf-migration-completion-announcement
KuCoin
SPOT Margin HF Migration Completion Announcement - March 4, 2026| KuCoin
Dear KuCoin API Users, Note: To understand the background and migration plan for this change, please read KuCoin ’s previously published announcement “KuCoin Ma
KuCoin WebSocket Pro API Rate Limit Rules
To ensure system stability, KuCoin has introduced corresponding rate-limit rules for WebSocket connections and message sending in the PRO API.
1. Maximum Concurrent Connections
Each IP can establish up to 512 connections.
Public and Private connections are counted separately.
The maximum total connections per IP is 1024.
2. WebSocket Connection Creation Rate
Each IP can initiate up to 150 new connections every 5 minutes.
If this limit is exceeded within a short period, the server may reject new connection requests.
It is recommended to reuse existing WebSocket connections and avoid frequently disconnecting and reconnecting.
3. Client Message Sending Rate
Each WebSocket connection is limited to 100 messages per 10 seconds sent to the server.
The following messages count toward this limit:
subscribe
unsubscribe
ping
Exception:
Order cancellation messages sent via WebSocket are not included in this rate limit.
If the limit is exceeded, the server may disconnect the WebSocket connection.
4. Maximum Topics per Connection
Each WebSocket connection can subscribe to up to 200 topics.
If more topics are required, please distribute them across multiple WebSocket connections.
5. Usage Recommendations
To achieve a more stable WebSocket experience, it is recommended to:
Reuse existing WebSocket connections whenever possible
Control the client message sending rate (no more than 100 messages / 10 seconds)
Split topics across multiple connections when subscribing to a large number of topics
Official Documentation:
https://www.kucoin.com/docs-new/rate-limit
To ensure system stability, KuCoin has introduced corresponding rate-limit rules for WebSocket connections and message sending in the PRO API.
1. Maximum Concurrent Connections
Each IP can establish up to 512 connections.
Public and Private connections are counted separately.
The maximum total connections per IP is 1024.
2. WebSocket Connection Creation Rate
Each IP can initiate up to 150 new connections every 5 minutes.
If this limit is exceeded within a short period, the server may reject new connection requests.
It is recommended to reuse existing WebSocket connections and avoid frequently disconnecting and reconnecting.
3. Client Message Sending Rate
Each WebSocket connection is limited to 100 messages per 10 seconds sent to the server.
The following messages count toward this limit:
subscribe
unsubscribe
ping
Exception:
Order cancellation messages sent via WebSocket are not included in this rate limit.
If the limit is exceeded, the server may disconnect the WebSocket connection.
4. Maximum Topics per Connection
Each WebSocket connection can subscribe to up to 200 topics.
If more topics are required, please distribute them across multiple WebSocket connections.
5. Usage Recommendations
To achieve a more stable WebSocket experience, it is recommended to:
Reuse existing WebSocket connections whenever possible
Control the client message sending rate (no more than 100 messages / 10 seconds)
Split topics across multiple connections when subscribing to a large number of topics
Official Documentation:
https://www.kucoin.com/docs-new/rate-limit
To improve the performance of KuCoin PRO-API, KuCoin will perform a non-disruptive upgrade on March 12, 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.
KuCoin API Notification
To improve the performance of KuCoin PRO-API, KuCoin will perform a non-disruptive upgrade on March 12, 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…
To improve the performance of KuCoin PRO-API, KuCoin originally planned to perform a non-disruptive upgrade at 07:00 (UTC) on March 12, 2026, it has now been postponed to 09:00 (UTC) on March 12, 2026. 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 improve the performance of KuCoin PRO-API, KuCoin will perform a non-disruptive upgrade on March 14, 2026, at 12:00 (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
Forwarded from KuCoin Announcement
What if AI agents could interact directly with crypto exchanges? 🤖
Today we launch KuCoin Skills Hub.
An open skills marketplace that lets AI agents and LLM tools access KuCoin exchange data via standardized APIs.
Developers can query:
• Spot markets
• Futures
• Margin
• Assets & balances
• Earn products
• Convert quotes
• Broker data
All structured for AI-powered applications.
Github🔗
Builders, start experimenting and stay tuned for more functions to come.
Today we launch KuCoin Skills Hub.
An open skills marketplace that lets AI agents and LLM tools access KuCoin exchange data via standardized APIs.
Developers can query:
• Spot markets
• Futures
• Margin
• Assets & balances
• Earn products
• Convert quotes
• Broker data
All structured for AI-powered applications.
Github🔗
Builders, start experimenting and stay tuned for more functions to come.
To improve the performance of KuCoin PRO-API, KuCoin will perform a non-disruptive upgrade on March 19, 2026, at 02:00 (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.
KuCoin Futures Will List INTCUSDT, AMZNUSDT & PLTRUSDT Stock Index Perpetual Contracts
KuCoin will officially launch Stock Index Perpetual Contracts at 09:00 on March 19, 2026 (UTC) for users in supported countries and regions. For more details about the product, please refer to our Stock Index Perpetual Contracts Product Documentation.
https://www.kucoin.com/announcement/en-kucoin-futures-will-list-intcusdt-amznusdt-pltrusdt-stock-index-perpetual-contracts-2026-03-19
KuCoin will officially launch Stock Index Perpetual Contracts at 09:00 on March 19, 2026 (UTC) for users in supported countries and regions. For more details about the product, please refer to our Stock Index Perpetual Contracts Product Documentation.
https://www.kucoin.com/announcement/en-kucoin-futures-will-list-intcusdt-amznusdt-pltrusdt-stock-index-perpetual-contracts-2026-03-19
KuCoin
KuCoin Futures Will List INTCUSDT, AMZNUSDT & PLTRUSDT Stock Index Perpetual Contracts (2026-03-19)| KuCoin
KuCoin will officially launch Stock Index Perpetual Contracts at 09:00 on March 19, 2026 (UTC) for users in supported countries and regions. For more details ab
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