> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fortytwo.network/llms.txt
> Use this file to discover all available pages before exploring further.

# Preview Limits & Quotas

Fortytwo implements rate limiting and usage quotas **in Preview stage** to ensure stable resource allocation across users and maintain optimal network performance.

## Overview

The Preview system implements the following types of limits:

1. **Concurrent Request Limits**: Maximum simultaneous requests per user.
2. **Request Queuing**: Maximum requests that can be queued.
3. **Usage Quotas**: Daily and weekly request limits.

You can find your personal limits in **the API Preview Invite Letter that was sent to your email address** that you specified in the API Access application form.

## Rate Limit Errors

When you exceed rate limits, the API returns an error. See the possible variations in '[Errors](/docs/api-errors#rate-limiting-errors)'.