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

# Authentication

> API authentication with Auth0

## Overview

All API requests require authentication using Bearer tokens issued by Auth0.

## Authentication Flow

<Steps>
  <Step title="Obtain Token">
    Authenticate via Auth0 to receive a JWT token.
  </Step>

  <Step title="Include in Requests">
    Add token to Authorization header:

    ```
    Authorization: Bearer YOUR_JWT_TOKEN
    ```
  </Step>
</Steps>

## Token Refresh

Tokens expire after 24 hours. Use refresh tokens to obtain new access tokens.

## Next Steps

<Card title="API Introduction" href="/api-reference/introduction">
  Return to API overview
</Card>