Authentication to a REST API

[RuiPatricio]

I have a REST api that is secured with a Bearer token provided by MS Graph/AzureAD. 

I did some testing by hard-coding the bearer token into my query and it works. 

My question is: 

Is there a method for me to sign-in when I do a refresh so I can get a valid token?

I think, ideally, I would like the default sign-in page from login.microsoft.com to come up when I atttempt to sign-in (thus supporting MFA), but I'm open to suggestions. 

[lbendlin]

That's a question between you and the API provider.  Are you on a company AAD? Have you considered writing a custom connector?