Middleware & Filters in Minimal APIs
Add authentication, authorization, exception handling, and endpoint filters to Minimal API pipelines.
Middleware vs Endpoint Filters
ASP.NET Core has two extensibility layers: middleware (wraps the entire pipeline, runs for every request) and endpoint filters (run only for specific endpoints). Both work in Minimal APIs.
Adding Middleware to Minimal APIs
Standard ASP.NET Core middleware is added with app.Use* methods. The order matters — middleware runs in the order it is registered.
var app = builder.Build();
app.UseHttpsRedirection();
app.UseAuthentication();
app.UseAuthorization();
app.UseRateLimiter();
app.MapGet("/secure", () => "Protected endpoint")
.RequireAuthorization();
app.Run();All lessons in this course
- Creating Your First Minimal API
- Route Groups, Parameters & Validation
- Middleware & Filters in Minimal APIs
- OpenAPI, Versioning & Deployment