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

# Introduction

<Warning>
  **This API is in preview.** Endpoints and request/response shapes are subject
  to change before the stable release.
</Warning>

The Ontoto API provides read access to your organisation's devices, sensor data, device groups, and
sites for external integrations.

To get started, [generate an API token](/api-reference/authentication) in the Ontoto Dashboard.

<Card title="Download OpenAPI spec" icon="download" href="https://docs.beta.ontoto.com/openapi.yaml">
  Full OpenAPI specification for use with a client generator or API tool.
</Card>