Minimal APIs — Animate | AI Wisdom

← Back to topic
🎞 ANIMATE · Mode 3 of 5 · +100 XP— .NET 8 Minimal APIs
📋Setup
⚙️Groups
🔄TypedResults
✅Validation
🎯 Next: Test →
Step 1 / 4
Speed
Minimal Setup
WebApplication.CreateBuilder registers services — no Startup.cs needed💡 Analogy
Like a startup with flat hierarchy vs a corporation — same capabilities, half the bureaucracy.
Minimal APIs replace the Controller/Startup pattern with direct app.MapGet/Post calls. Fewer files, less ceremony, same power.
Console Output
> WebApplication created
> AppDbContext registered (Scoped)
> IProductService → ProductService (Scoped)
●MinimalApi.cs
Minimal SetupL1–7
1using Microsoft.AspNetCore.Http.HttpResults;
2 
3var builder = WebApplication.CreateBuilder(args);
4builder.Services.AddDbContext<AppDbContext>(opts =>
5    opts.UseSqlite("Data Source=app.db"));
6builder.Services.AddScoped<IProductService, ProductService>();
7 
8var app = builder.Build();
9 
10// Route Groups — organize related endpoints
11var products = app.MapGroup("/products")
12    .RequireAuthorization()
13    .WithOpenApi();
14 
15// GET with typed result — compile-time response type safety
16products.MapGet("/{id:guid}", async Task<Results<Ok<ProductDto>, NotFound>>
17    (Guid id, IProductService svc) =>
18{
19    var product = await svc.GetAsync(id);
20    return product is null ? TypedResults.NotFound()
21                           : TypedResults.Ok(product);
22});
23 
24// POST with validation
25products.MapPost("/", async Task<Results<Created<ProductDto>, ValidationProblem>>
26    (CreateProductRequest req, IProductService svc) =>
27{
28    if (string.IsNullOrWhiteSpace(req.Name))
29        return TypedResults.ValidationProblem(
30            new Dictionary<string, string[]> { ["Name"] = ["Name is required"] });
31 
32    var product = await svc.CreateAsync(req);
33    return TypedResults.Created($"/products/{product.Id}", product);
34});
35 
36app.Run();
36 lines
Timeline — 4 Steps
Minimal Setup
WebApplication.CreateBuilder registers services — no Startup.cs needed💡 Analogy
Like a startup with flat hierarchy vs a corporation — same capabilities, half the bureaucracy.
Minimal APIs replace the Controller/Startup pattern with direct app.MapGet/Post calls. Fewer files, less ceremony, same power.
Console Output
> WebApplication created
> AppDbContext registered (Scoped)
> IProductService → ProductService (Scoped)

Was this page helpful?

Discussion

WebApplication.CreateBuilder registers services — no Startup.cs needed

💡 Analogy

Like a startup with flat hierarchy vs a corporation — same capabilities, half the bureaucracy.

Minimal APIs replace the Controller/Startup pattern with direct app.MapGet/Post calls. Fewer files, less ceremony, same power.

Console Output

> WebApplication created
> AppDbContext registered (Scoped)
> IProductService → ProductService (Scoped)

WebApplication.CreateBuilder registers services — no Startup.cs needed

💡 Analogy

Like a startup with flat hierarchy vs a corporation — same capabilities, half the bureaucracy.

Minimal APIs replace the Controller/Startup pattern with direct app.MapGet/Post calls. Fewer files, less ceremony, same power.

Console Output

> WebApplication created
> AppDbContext registered (Scoped)
> IProductService → ProductService (Scoped)