---
agentTools:
  projectIndex: https://docs.followupboss.com/llms.txt
---

# Registration and Identification

# Overview

> 📘 Becoming a Follow Up Boss Partner
>
> If you are interested in becoming an official integration partner with Follow Up Boss, please reach out to <partnerships@followupboss.com>!

We ask that if you are accessing the Follow Up Boss API, you first [register your system.](https://apps.followupboss.com/system-registration) If you are accessing the FUB API in order to provide services to a FUB customer, you MUST [register your system.](https://apps.followupboss.com/system-registration). Every request to the API should include the registered 'X-System' and 'X-System-Key' headers provided to you after you [register your system.](https://apps.followupboss.com/system-registration).

```http
X-System: AwesomeWebsiteBuilder
X-System-Key: 560270f7914b5b4a5f4dc1793ebc2796
```

On first glance system may look similar to the "source" attribute sent along with lead notification events. The difference is that the lead source describes the brand or marketing name a broker uses for a lead source, and system describes the system used.