# Getting started with Redocly API reference docs

## Overview

Render your OpenAPI definition(s) as interactive API documentation.

**Main features**:

- Support of *deeply nested payloads*.
- **Try It** API console with support for different servers and the OAS3 security schemes.
- Automated code sample generation.
- Advanced search.
- Separate-file [embedded markdown](/docs-legacy/api-reference-docs/guides/embedded-markdown) for extended introductions.


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To use **Redocly API reference docs** you need an OpenAPI definition (it's compatible with version 2.0, 3.0, and 3.1 of the specification).

If you require Redocly API reference docs to be deployed on-premise only, such as due to specific security constraints, you are available to do that on our enterprise plan via two options:

- Using an HTML element (easiest)
- Building static documentation with a CLI tool (medium)


Find our [on-premise guide here](/docs-legacy/api-reference-docs/guides/on-premise).