Announcement on UTA API(Management Pool) Rate Limit Rule Upgrade

08/24/2026, 11:18:00

To continuously improve the API resource management framework and enhance the efficiency and flexibility of API resource allocation for users, we have previously completed the upgrade of the Unified Trading Account (UTA) API rate limit mechanism, introducing the “Master-Sub Account Unified Rate Limit + Self-Managed Quota Allocation” model(link:https://www.kucoin.com/announcement/en-announcement-on-uta-api-rate-limit-rule-upgrade).
 
This upgrade will extend to the Management API rate limit pool. Following the upgrade, the Management API rate limit rules will be changed from the current “independent rate limit per UID” model to a “unified master account and sub-accounts rate limit with flexible quota allocation” model.
 
The Management API rate limit pool calculation method, quota allocation mechanism, and VIP upgrade/downgrade adjustment rules will remain consistent with the UTA API rate limit mechanism that has already been launched.
 

  1. Effective Time

This upgrade is scheduled to take effect on:
2026-08-27 09:00:00 (UTC)
 
 

  1. Scope of Impact

This adjustment applies only to:
  • Rate Limit Pool: Management rate limit pool
  • API Scope: Applies only to UTA API REST. Classic API remains unchanged.
 

  1. Adjustment Details

Current Rules
  • Each UID has an independent API rate limit quota;
  • Master accounts and sub-accounts calculate rate limits independently;
  • Rate limit resources cannot be shared across different sub-accounts.
 
【Illustration】
Custom Image
 
 
Updated Rules
  • The system will allocate a unified total UTA API rate limit quota based on the user’s VIP level;
  • All sub-accounts will share the same user-level total rate limit pool;
  • Users may allocate the total rate limit quota across different sub-accounts as needed.
 
【Illustration】
Custom Image
 
 

  1. Rate Limit Quota Details

  • The total rate limit quota rules for different VIP levels will remain consistent with the current UTA API quota rules.
 
  • Rate Limit Notes
    • Newly created sub-accounts will have a default API rate limit of 10 requests per second. This default value will not be counted toward the user’s total API rate limit quota.
    • Master account rate limit quota = User’s current total rate limit quota - Total quota allocated to sub-accounts (excluding the default 10 requests/s allocation).
 
  • Upgrade and Downgrade Rules
    • Upgrade Rules If an account is upgraded, the available rate limit quotas for both master and sub-accounts will increase accordingly. Users may manually reconfigure sub-account rate limit allocations afterward.
 
  • Downgrade Rules If an account is downgraded, the rate limits of sub-accounts will be automatically adjusted proportionally to the new quota values. The master account rate limit will then be recalculated based on the total allocated quota of all sub-accounts.
        For example: A user is downgraded from VIP7 to VIP5
        Total rate limit quota changes from 1000 to 700
        The rate limit of each UID will be reduced proportionally to 70%.
 

  1. Migration Rules for Existing Users

During the initial migration of existing users, the following rules will apply:
  • If the user has previously set rate limit values for sub-accounts:
    • The rate limit values of both the sub-accounts and the master account will directly inherit the quota settings previously configured under the UTA API rate limit mechanism.
  • If the user has not set rate limit values for sub-accounts:
    • The sub-account rate limit will be set to the default rate limit value of 10 requests/second.
  • If the user does not have any sub-accounts:
    • The master account rate limit rules will be upgraded directly according to the new Management API rate limit mechanism.
 

  1. API Weight Adjustment

Following the adjustment of rate limit quotas for different VIP levels, the API weights for all relevant endpoints will be updated accordingly. Please refer to the API documentation for detailed information.
 
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!