| Limit | Value |
|---|---|
| Messages per user | 1 per 5 seconds |
| Max payload size | 16KB |
| Channel name length | 255 characters |
| Subscription count | Unlimited |
If you exceed the rate limit, the API returns HTTP 429 with retry information:
{
"error": "rate limit exceeded (1 message per 5 seconds)",
"retry_after": 3,
"retry_timestamp": 1769907000000
}