> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify-mintlify-add-i-to-quickstart-8818.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Assistant message

> Generates a response message from the assistant for the specified domain.

## Rate limits

The assistant API has the following limits:

* 10,000 uses per key per month
* 10,000 requests per Mintlify organization per hour
* 10,000 requests per IP per day

## Suggested usage

For best results, use the [useChat hook from ai-sdk](https://ai-sdk.dev/docs/reference/ai-sdk-ui/use-chat#usechat) to send requests and handle responses.

You can set `fp`, `threadId`, and `filter` in the `body` field of the options parameter passed to the hook.