Install Nuget package in your solution – Swashbuckle.AspNetCore
Use below configuration in your Program.cs var builder = WebApplication.CreateBuilder(args); builder.Services.AddControllers(); // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle builder.Services.AddEndpointsApiExplorer(); builder.Services.AddSwaggerGen(); builder.AddAppAuthetication(); var app = builder.Build(); // Configure the HTTP request pipeline. if (!app.Environment.IsDevelopment()) { app.UseSwagger(); app.UseSwaggerUI(); } app.UseHttpsRedirection(); app.UseAuthorization(); app.MapControllers(); app.Run();