This feature is available with the following pricing plans: Premium, Unlimited, Pay as You Grow
This article explains how to enable the API Access app in your school.
If you haven't already done so, request access to the API Access app by contacting SchoolKeep Support. You will receive an email once you have been given access.
Once you have access to the app, go to the Apps page and click Configure next to API Access.
Toggle the button to enable the app.