dotnet-backend-patterns

Production-grade C#/.NET patterns for APIs, MCP servers, and enterprise backends with modern async, DI, and data access practices.

wshobson/agents|Updated May 4, 2026

Works with

Claude CodeCursorClineWindsurfCodexGoose

What it does

Covers clean architecture project structure, dependency injection lifetimes, and configuration with IOptions pattern
Async/await best practices including parallel execution, ConfigureAwait usage, and ValueTask optimization for hot paths
Entity Framework Core and Dapper repository patterns with query optimization, multi-mapping, and performance considerati

Repository

wshobson/agents

Last updated

May 4, 2026

Installation Guide

Select your AI agent

How to use dotnet-backend-patterns on Cursor

AI-first code editor with Composer

Prerequisites

Before installing skills in Cursor, ensure your development environment meets these requirements:

›Cursor installed and configured on your machine
›Node.js 16+ with npm — verify with node --version
›Active project directory where you want to add dotnet-backend-patterns

Run the install command

Execute the skills CLI command in your project's root directory to begin installation:

$npx skills add https://github.com/wshobson/agents --skill dotnet-backend-patterns

Fetches dotnet-backend-patterns from wshobson/agents and configures it for Cursor.

Select Cursor when prompted

The CLI shows a list of agents. Use arrow keys and space to select Cursor:

◆ Which agents do you want to install to?

│

│ ── Universal (.agents/skills) ────────────────

│ · Cline · Codex · Goose · Windsurf

│ ●Cursor(selected)

│ · Cursor · Aider · Continue

Verify installation

Confirm successful installation by checking the skill directory location:

.cursor/skills/dotnet-backend-patterns

Restart Cursor to activate dotnet-backend-patterns. Access via /dotnet-backend-patterns in your agent's command palette.

⚠

Security Notice

We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.

Skills execute code in your environment. Always review source, verify the publisher, and test in isolation before production.

›View source on GitHub ›Skills CLI docs ›About Cursor ›What are agent skills?

Documentation

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Use Cases

Task Automation & Efficiency

Automate repetitive workflows and reduce manual effort

Example

Generate reports, summarize documents, draft communications

✓

Save 3-5 hours per week on routine tasks

Knowledge Enhancement

Learn new skills, understand complex topics, get expert guidance

Example

Explain concepts, provide examples, suggest learning resources

✓

Accelerate learning and skill development by 2x

Quality Improvement

Enhance output quality through reviews, suggestions, and refinements

Example

Review drafts, suggest improvements, catch errors

✓

Improve work quality by 30-40% with less effort

When to Use This Skill

Developing new .NET Web APIs or MCP servers

Reviewing C# code for quality and performance

Designing service architectures with dependency injection

Implementing caching strategies with Redis

Writing unit and integration tests

Optimizing database access with EF Core or Dapper

Configuring applications with IOptions pattern

Handling errors and implementing resilience patterns

Core Concepts

1. Project Structure (Clean Architecture)

src/ ├── Domain/ # Core business logic (no dependencies) │ ├── Entities/ │ ├── Interfaces/ │ ├── Exceptions/ │ └── ValueObjects/ ├── Application/ # Use cases, DTOs, validation │ ├── Services/ │ ├── DTOs/ │ ├── Validators/ │ └── Interfaces/ ├── Infrastructure/ # External implementations │ ├── Data/ # EF Core, Dapper repositories │ ├── Caching/ # Redis, Memory cache │ ├── External/ # HTTP clients, third-party APIs │ └── DependencyInjection/ # Service registration └── Api/ # Entry point ├── Controllers/ # Or MinimalAPI endpoints ├── Middleware/ ├── Filters/ └── Program.cs

2. Dependency Injection Patterns

// Service registration by lifetime public static class ServiceCollectionExtensions { public static IServiceCollection AddApplicationServices( this IServiceCollection services, IConfiguration configuration) { // Scoped: One instance per HTTP request services.AddScoped<IProductService, ProductService>(); services.AddScoped<IOrderService, OrderService>(); // Singleton: One instance for app lifetime services.AddSingleton<ICacheService, RedisCacheService>(); services.AddSingleton<IConnectionMultiplexer>(_ => ConnectionMultiplexer.Connect(configuration["Redis:Connection"]!)); // Transient: New instance every time services.AddTransient<IValidator<CreateOrderRequest>, CreateOrderValidator>(); // Options pattern for configuration services.Configure<CatalogOptions>(configuration.GetSection("Catalog")); services.Configure<RedisOptions>(configuration.GetSection("Redis")); // Factory pattern for conditional creation services.AddScoped<IPriceCalculator>(sp => { var options = sp.GetRequiredService<IOptions<PricingOptions>>().Value; return options.UseNewEngine ? sp.GetRequiredService<NewPriceCalculator>() : sp.GetRequiredService<LegacyPriceCalculator>(); }); // Keyed services (.NET 8+) services.AddKeyedScoped<IPaymentProcessor, StripeProcessor>("stripe"); services.AddKeyedScoped<IPaymentProcessor, PayPalProcessor>("paypal"); return services; } } // Usage with keyed services public class CheckoutService { public CheckoutService( [FromKeyedServices("stripe")] IPaymentProcessor stripeProcessor) { _processor = stripeProcessor; } }

3. Async/Await Patterns

// ✅ CORRECT: Async all the way down public async Task<Product> GetProductAsync(string id, CancellationToken ct = default) { return await _repository.GetByIdAsync(id, ct); } // ✅ CORRECT: Parallel execution with WhenAll public async Task<(Stock, Price)> GetStockAndPriceAsync( string productId, CancellationToken ct = default) { var stockTask = _stockService.GetAsync(productId, ct); var priceTask = _priceService.GetAsync(productId, ct); await Task.WhenAll(stockTask, priceTask); return (await stockTask, await priceTask); } // ✅ CORRECT: ConfigureAwait in libraries public async Task<T> LibraryMethodAsync<T>(CancellationToken ct = default) { var result = await _httpClient.GetAsync(url, ct).ConfigureAwait(false); return await result.Content.ReadFromJsonAsync<T>(ct).ConfigureAwait(false); } // ✅ CORRECT: ValueTask for hot paths with caching public ValueTask<Product?> GetCachedProductAsync(string id) { if (_cache.TryGetValue(id, out Product? product)) return ValueTask.FromResult(product); return new ValueTask<Product?>(GetFromDatabaseAsync(id)); } // ❌ WRONG: Blocking on async (deadlock risk) var result = GetProductAsync(id).Result; // NEVER do this var result2 = GetProductAsync(id).GetAwaiter().GetResult(); // Also bad

dotnet-backend-patterns

What it does

Category

Repository

Last updated

Installation Guide

How to use dotnet-backend-patterns on Cursor

Prerequisites

Run the install command

Select Cursor when prompted

Verify installation

Security Notice

Documentation

List & Monetize Your Skill

Use Cases

Task Automation & Efficiency

Knowledge Enhancement

Quality Improvement

Install Skill

.NET Backend Development Patterns

When to Use This Skill

Core Concepts

1. Project Structure (Clean Architecture)

2. Dependency Injection Patterns

3. Async/Await Patterns

`Implementation Guide`

`Best Practices`

`When to Use This`

`Learning Path`

`Related Skills`

backend-development

backend-architect

senior-backend

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dotnet-best-practices

dotnet-framework-4.8-expert

`Reviews`

`Discussion`