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.NET Backend Development Patterns · wshobson | DecimalAI

codingby wshobson

.NET Backend Development Patterns

wshobson/dotnet-backend-patterns

Source wshobson/agents ↗License MIT

Master C#/.NET backend development patterns for building robust APIs, MCP servers, and enterprise applications. Covers async/await, dependency injection, Entity Framework Core, Dapper, configuration, caching, and testing with xUnit.

SkillScore96Maintained

Automatic

Coding pack

Last verified 8/7/2026

What it changes

Passed 23 of 24 test cases with the skill, and 22 of 24 without it.

Without skill92%

With skill96%

Checks it passed that the model alone missed

Maps result success status to HTTP 201 Created and failure to HTTP 400 BadRequest

1 fixed22 passed either way1 still failing0 broke

Pass-rate lift: +4 pp
Tokens: +253%
Agent turns: 0%
Response time: -30%

Model gemini-3.6-flashMeasured 8/7/2026v123 of 24 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/wshobson-dotnet-backend-patterns/SKILL.md https://app.decimal.ai/s/wshobson-dotnet-backend-patterns/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add wshobson-dotnet-backend-patterns, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/wshobson-dotnet-backend-patterns/ and pins it in .decimal/skills.lock

decimalai skills add wshobson-dotnet-backend-patterns

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/wshobson-dotnet-backend-patterns/SKILL.md https://app.decimal.ai/s/wshobson-dotnet-backend-patterns/SKILL.md

Raw file: /s/wshobson-dotnet-backend-patterns/SKILL.md ↗ · machine-readable summary at /s/wshobson-dotnet-backend-patterns.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

A test case the skill fixed. Same model, same prompt, with and without the skill.

Prompt

In an order creation backend service, developers currently throw ValidationException and InsufficientStockException to handle invalid payloads or missing inventory. Refactor this design using C# code to manage flow control and error messaging cleanly without raising runtime exceptions for predictable business validation failures.

What was checked, without and with the skill
Checked	Without skill	With skill
Returns a explicit result object indicating operation outcome rather than throwing exceptions	Passed	Passed
Maps result success status to HTTP 201 Created and failure to HTTP 400 BadRequest	Missed	Passed

case-08 · gemini-3.6-flash · 8/7/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md805 lines5 files

.NET Backend Development Patterns

Master C#/.NET patterns for building production-grade APIs, MCP servers, and enterprise backends with modern best practices (2024/2025).

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/

Track record

Benchmark

23 / 24

test cases passed, vs 22 / 24 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

wshobson / agents

plugins/dotnet-contribution/skills/dotnet-backend-patterns/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 4 files

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Ready to supercharge your AI agents?

See it in action

What's inside

.NET Backend Development Patterns

When to Use This Skill

Core Concepts

1. Project Structure (Clean Architecture)

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills