# Rate limits

> Live keys allow 100 requests per second; bursts are smoothed with a token bucket.

Source: https://helpdox.fekbd.com/docs/relay-api/errors/rate-limits-2/

Live keys allow 100 requests per second; bursts are smoothed with a token bucket. Here is exactly what to do.

## Steps

1. 1Watch the headers`RateLimit-Remaining` and `RateLimit-Reset` come with every response.
2. 2Back off on 429Wait for the number of seconds in `Retry-After`.
3. 3Batch where you can`POST /v3/messages/batch` sends up to 500 messages in one call.

Tip

Need more? Business plans can raise limits to 1,000 requests per second.

## Still stuck?

Include the request ID from the `Relay-Request-Id` response header — it lets us find your call in seconds.