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 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 app
Give the application a name:
From that application's web page, obtain its API key, also known as a HubSpot API key or HAPI key. This image
shows where it can be obtained from the web page, whose URL is of the form
Copy the API key and store it safely so that you can retrieve it when configuring the connector.