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

# MysteryBox in Nebius AI Cloud

MysteryBox enables you to store sensitive data in an encrypted form. For example, you can save API keys, tokens or certificates. After that, you can reuse them in your scripts, configuration files or applications, and thus avoid hardcoding sensitive data.

The service is [in preview](/overview/services#service-and-application-stages), and available in all [Nebius AI Cloud regions](/overview/regions/).

<CardGroup cols={2}>
  <Card title="Overview" icon="link" href="/mysterybox/overview">
    Get familiar with possible use cases and MysteryBox resources
  </Card>

  <Card title="Creating secrets" icon="link" href="/mysterybox/secrets/create">
    Learn how to create and configure a secret
  </Card>

  <Card title="Creating versions" icon="link" href="/mysterybox/secrets/create-version">
    Learn how to create and configure a version of a secret
  </Card>

  <Card title="Making versions primary" icon="link" href="/mysterybox/secrets/make-version-primary">
    Set the required version as the primary and default one
  </Card>

  <Card title="Getting secrets, versions and payloads" icon="link" href="/mysterybox/secrets/get">
    Find out how to view data stored in secrets
  </Card>
</CardGroup>