# 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) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.nebulablock.com/core-services/overview-3.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.