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

# Authentication

> How to get access to our API

## Getting an API Key

If you want to be able to call our API's, you will need to request an API key
from our [support email: support@nox.energy](mailto:support@nox.energy) .

<Warning>
  Make sure to keep your API key secure and never expose it in client-side code or public repositories.
  If it does get exposed. Contact us as quickly as possible.
</Warning>

## Using the API key

Include the API key in your API calls with the header:

```json theme={null}
x-api-key: YOUR_API_KEY
```

If you want to test the API using the UI of the documentation website, add it in the `x-api-key` field in
the `Authorization` dropdown when you clicked on `Try it ►`.\
Without a valid API key, your requests will be rejected.

Base URL Sandbox: [https://api.sandbox.nox.energy](https://api.sandbox.nox.energy)\
Base URL Production: [https://api.nox.energy](https://api.nox.energy)