leanIX has a modern REST API that allows the development of individual dashboards. Dashboards will show in a new report tab "Custom". Further information on how to use the REST API can be found here.
Below you find an example of a dashboard which was developed by Axel Springer. It gives an overview on certain Fact Sheets with data gathered via the REST API. Axel Springer shares this project for free under the MIT license. You can find the Github repository here.