SKILL.md
Day 1 · Step 3 — Swagger
Check up-api/Program.cs first — recent dotnet new webapi templates already scaffold OpenAPI (AddOpenApi() / MapOpenApi()). If Swagger UI specifically is wanted (not just the raw OpenAPI JSON), add Swashbuckle:
```Run bash cd up-api dotnet add package Swashbuckle.AspNetCore
In `Program.cs`:
builder.Services.AddEndpointsApiExplorer(); builder.Services.AddSwaggerGen(); // ... app.UseSwagger(); app.UseSwaggerUI();