> For the complete documentation index, see [llms.txt](https://docs.nebulablock.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nebulablock.com/core-services/overview-3.md).

# SSH Keys

SSH keys are secure credentials that authenticate and connect you to your GPU instances remotely, providing a more secure\
alternative to traditional passwords. Managing them is super easy at Nebula Block, and can be done in just a few clicks!

## Key Features

* **Ease of use:** No setup required—get started instantly after signing in.
* **Code Samples:** See our code samples for using SSH keys.

## Prerequisites

* **Nebula Block Account:** Ensure you have an account on the [Nebula Block](https://www.nebulablock.com).

## Pricing and Billing

* SSH keys management is free of charge, so add as many as you want!

## See Also

* [Glossary](/glossary.md)
* [API Reference - SSH Keys](/overview/platform_api/create_ssh_key.md)