Introduction
As the connection will be an application that interfaces with HubSpot, you will need to register at HubSpot as a
developer and create a HubSpot application
using the HubSpot developer website. The application can have any name
and settings. This can be done with
a free HubSpot account, available at https://developers.hubspot.com.
HubSpot Registration Steps
Once an account has been created and you have logged in, create an application by clicking the Create an app
button:

You are taken to a form where you can provide a name, description, app logo, and other information about your application.
Follow the HubSpot instructions to complete the form and create your application.
From that application's web page, obtain its API key, also known as a HubSpot API key. You can reach the web page at this URL, replacing [app-id]
with your app's id:
https://app.hubspot.com/api-key/
[app-id]/call-log
:

Copy the Active API key and store it safely so that you can retrieve it when configuring the connector.