This has been a stumbling block for us too, there is little to no reporting available for Solution Articles. We have raised numerous feature requests for this module. Hoping to see something coming down the pipeline with the revamping of Freshworks Analytics.
Right now to solve a use case we had with pulling articles that were published in the last 30 days, I had to build a custom app and house in the ticket sidebar. The app uses the Freshservice API and loops through all the categories, folders, and articles to find created_at dates with in 30 days and then prints them out as a bulleted list in the ticket sidebar. But since I don’t want this to run all the time, I keep it local and just run it in the dev environment through FDK when I need it.
Not a great solution but it works for right now I guess lol.
Hope this gains some traction as we desperately need reporting on the knowledge base!