Which api should be used to check the mail.readwrite and user.read permissions are granted or not

Question

If I call this method
var responseStatusString = await httpClient.GetStringAsync(https://graph.microsoft.com/v1.0/servicePrincipals?$filter=DisplayName eq 'Microsoft Graph')

Getting below error
Response status code does not indicate success: 403 (Forbidden).

httpclient:

Answer 1

Hi @Krishna ,

Hope you are doing well,

I have tried to reproduce the the scenario to get assigned/granted permissions as per your requirement mentioned.
Please use the below endpoint and grant the required permissions before running endpoint as per this reference link

API :- https://graph.microsoft.com/v1.0/servicePrincipals/*******/oauth2PermissionGrants?$select=scope

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Answer 2

Added Application.Read.All permission , and things are working now,

Thanks @RajeshKumarMSFT