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

# Before you begin

> Review the sandbox, Try It, and licensing pages before integrating with Lerian APIs.

This section covers the tools and policies you should know before integrating with Lerian's APIs. Use the sandbox to test your requests safely, and review the licensing pages to understand usage rights and third-party attributions.

## Available pages

***

<div className="space-y-6 w-full sm:max-w-4xl">
  <Columns cols={2}>
    <Card title="Using our Sandbox" icon="flask-vial" href="/en/reference/using-our-sandbox">
      Test your integrations in a secure, isolated environment with simulated data.
    </Card>

    <Card title="Using the Try It feature" icon="play" href="/en/reference/using-try-it">
      Interact with our APIs directly from the documentation.
    </Card>

    <Card title="Lerian's License" icon="key" href="/en/reference/lerians-license">
      Understand how Lerian's software license works, including usage rights and conditions.
    </Card>

    <Card title="Licenses & credits" icon="scale-balanced" href="/en/reference/licenses-and-credits">
      Review the third-party licenses and source-available acknowledgments.
    </Card>
  </Columns>
</div>