Rate limits

The Platform Chat API limits the maximum request rate per account (App Key) to ensure consistent, high-quality service for all customers.

• The Endpoint list lists the specific rate limit for each endpoint. Most endpoints have a default limit of 100 requests per second; some endpoints have different limits.

If you exceed these limits, the API returns HTTP 429 Too Many Requests.

Known issues

1. Set message metadata and Delete message metadata also consume the rate quota of Send a direct message (default 6,000 per minute) or Send a group message (default 20 per second). Because the group message API has a low default limit of 20 per second, this issue is more likely to surface there. Avoid making rapid metadata changes immediately after sending group messages.