disclaimer--this is my first time using .NET Core after taking over a site from another team so still learning. I have a client app called 3d with a web API. I am trying to hit the API through Postman because I have a requirement to be able to make the call from an external application without user input but it fails due to a pop up asking the user to sign into Azure:

The call works successfully if I execute it through swagger locally (there's no auth on the calls themselves yet). The culprit seems to be in the startup file which redirects the user to the SSO page:
services.AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
.AddCookie(CookieAuthenticationDefaults.AuthenticationScheme, options =>
{
options.Cookie.Path = Configuration["SiteConfiguration:BasePath"];
options.Cookie.Domain = Configuration["SiteConfiguration:Domain"];
})
.AddMicrosoftIdentityWebApp(Configuration.GetSection("AzureAd"),
OpenIdConnectDefaults.AuthenticationScheme,
"V3Cookie");
Is there a way to work around this and be able to hit the API through postman/code? Could I have a service account bypass it? Or is there a way to also do token auth?
Let me know if I can clarify anything, thanks