Brett Powell has a project to show Analysis Services DMVs in SQL Server Management Studio:
Just like with registered servers in SSMS, if you’re a BI administrator or developer that regularly needs to access and analyze Analysis Services models, whether that’s Power BI Premium, Azure AS, or SSAS, then quick access to the available DMVs aids your productivity.
For example you may want to quickly retrieve the DAX measures in a model including their expressions, the columns of a table, the largest columns in terms of memory consumption or cardinality, the row-level security roles and role memberships, etc. Obviously it wouldn’t be efficient to open the Power BI Desktop file or the Visual Studio solution to obtain this information and a tool like the Tabular Model Schema Reference v2.0 might be more than you need for short term and light ad hoc scenarios.
Click through for a link to Brett’s project as well as instructions on how to use it and a quick demo.