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

# Authentication

You need to include a valid API key in the Authorization header of each request you make to our API. Each request to our API endpoints must include this authorization header.

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

Your API key can be found on the Lonescale App > Integrations > Public API

<Card title="Get my API Key" icon="sparkles" href="https://app.lonescale.com/app/integrations" />

Be sure to replace YOUR\_API\_KEY with the actual API key. Without a valid API key in your request, you will not be able to access the API endpoints and will receive a 401 Unauthorized response.

Keep your API key secure and do not share it publicly.