Figma does not have a public API for getting library analytics. But you might be interested in this Figma blog post:

Thank you, @tank666

It’s interesting to see there are other people out there trying to solve the same problem.

It would nice if there was a native way of doing it rather than having to spin up a node server to do some simple maths 😕

I’ve added new feature to my Figma Chrome extension to allow you to generate a CSV of the analytics data from your library

Hi, Library analytics API has since been released.