# Authorization

When authorizing against the Monolo REST API, one must provide a standard HTTP `Authorization` header in the following format:

```aspnet
'Authorization: FRX-API api-key=<your_api_key>,
                        signature=<signature>,
                        timestamp=<unix_timestamp>'
```

[API credentials](/authorization/management.md) consist of an **API key** and an **API secret,** forming a pair together. The key must be passed with each request in the Authorization header’s API-Key component and the **API secret** is used for the generation of the [Signature](/authorization/signature.md) component.\
The **Timestamp** component must be an integer value representing the current [UNIX epoch time](https://www.unixtimestamp.com/) in milliseconds.

{% hint style="info" %}
**All requests that require authorization are labelled with this icon 🔒**
{% endhint %}


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