Adjust Rate Limits
The IM Service limits the maximum API request frequency per account (App Key) to ensure that all customers can enjoy consistent, high-quality service.
- The API Interface List provides the specific rate limits for each interface. Most interfaces have a default rate limit of 100 requests per second, while some APIs are not subject to this restriction.
If the API usage exceeds these limits, the Server API will return an HTTP 429 Too Many Requests error.
Known Issues
- Set Message Extension for One-to-One and Group Messages and Delete Message Extension for One-to-One and Group Messages will consume additional rate limit quotas for Send One-to-One Message (default: 6000 messages per minute) or Send Group Message (default: 20 messages per second). Since the default rate limit for the Send Group Message API is 20 messages per second, it is more susceptible to this issue. It is recommended to avoid immediately setting or deleting message extensions at a high frequency after sending group messages to prevent triggering this issue.