Is there an API available for storman.aspx?

[renzorenzo]

I'm currently using _api/site/usage to track the total storage space used and the available space, but this API only displays the overall status and I'm wondering if there's an API that breaks down the files under it like seen in storman.aspx

I'm building a report in PowerBI and was not given admin access in sharepoint 

[#2]

@renzorenzo 

Check below threads and see if it helps for your requirements:

1. How to get storage size of a SharePoint site using API? 
2. SharePoint site usage reports - MS Graph API  

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