Links

ASP.NET Core 9 integration

dotnet add package Scalar.AspNetCore

Program.cs

builder.Services.AddOpenApi();

if (app.Environment.IsDevelopment())
{
    app.MapOpenApi();
    // add the following lines
    app.MapScalarApiReference(options =>
    {
        options
            .WithTitle("MyApp API Reference")
            .WithTheme(ScalarTheme.Solarized)
            .WithClientButton(false);
            //.WithDefaultOpenAllTags(true)
    });
}

URL: http://localhost:5000/scalar

Properties/launchSettings.json

{
  "profiles": {
    "http": {
      "launchBrowser": true,
      "launchUrl": "http://localhost:5000/scalar",
      "applicationUrl": "http://localhost:5000"
    }
  }
}