# dotnet-contribution

This plugin adds an agent and a skill for C#, ASP.NET Core, Entity Framework Core, and Dapper work. Use them to plan APIs, review code, or choose a data-access approach.

- plugin · `type=plugin` · Claude Code, Codex, Cursor · ★ 41729
- Author: Seth Hobson
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/wshobson/agents/tree/HEAD/plugins/dotnet-contribution
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/plugins/dotnet-contribution

## What it does

The plugin includes the `dotnet-architect` agent for API design, code review, and architecture decisions, plus the `dotnet-backend-patterns` skill covering services, repositories, dependency injection, caching, and tests. It also ships service and repository templates, along with EF Core and Dapper reference guides.

Ask the agent to plan a REST API or inspect an EF Core query for N+1 issues. The skill can guide a Dapper repository implementation. Other subjects include Minimal APIs and controllers, transactions, Redis caching, and integration tests with WebApplicationFactory. These are patterns and templates, not a ready-made application.

The compatibility table lists .NET 8.0+, C# 12+, ASP.NET Core 8.0+, and EF Core 8.0+. It also lists SQL Server 2019+ and Redis 6.0+. Projects on earlier versions may not match the plugin’s examples.

## Install

### Claude Code (native platform)

**Plugin marketplace**
In the agent chat (not a shell):
```text
/plugin marketplace add wshobson/agents
```
In the agent chat (not a shell):
```text
/plugin install dotnet-contribution@claude-code-workflows
```

## When to use it
- design a REST API for order management
- review async code for issues
- spot N+1 problems in an EF Core query
- choose EF Core or Dapper for a read scenario
- build a Dapper repository from the provided patterns

## Example prompts
- Ask `dotnet-architect` to design a REST API for orders with DTOs and validation.
- Have `dotnet-architect` check this EF Core query for N+1 issues.
- Use `dotnet-backend-patterns` to implement a repository with Dapper.

## Source text · dotnet-contribution · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 008b7b38114d741d.

BEGIN THIRD-PARTY FILE 008b7b38114d741d
````text
# .NET Backend Development Plugin

A comprehensive plugin for .NET backend development with C#, ASP.NET Core, Entity Framework Core, and Dapper.

## Overview

This plugin provides agents, skills, and patterns for building production-grade .NET applications. It focuses on modern C# (12/13), ASP.NET Core 8+, and enterprise development patterns.

## Contents

### Agents

| Agent              | Model  | Description                                                                        |
| ------------------ | ------ | ---------------------------------------------------------------------------------- |
| `dotnet-architect` | Sonnet | Expert .NET architect for API development, code review, and architecture decisions |

### Skills

| Skill                     | Description                                                                 |
| ------------------------- | --------------------------------------------------------------------------- |
| `dotnet-backend-patterns` | Comprehensive patterns for services, repositories, DI, caching, and testing |

### Assets

- `service-template.cs` - Complete service implementation with Result pattern, validation, caching
- `repository-template.cs` - Repository implementations with Dapper and EF Core

### References

- `ef-core-best-practices.md` - EF Core optimization guide
- `dapper-patterns.md` - Advanced Dapper usage patterns

## Usage

### With Claude Code CLI

```bash
# General .NET architecture help
claude -p "Act as dotnet-architect and design a caching strategy for my product catalog"

# Code review
claude -p "Act as dotnet-architect and review this async code for issues"

# Implementation help
claude -p "Use dotnet-backend-patterns skill to implement a repository with Dapper"
```

### Example Prompts

1. **API Design**

   ```
   Act as dotnet-architect. Design a REST API for order management with proper
   DTOs, validation, and error handling.
   ```

2. **Performance Review**

   ```
   Act as dotnet-architect. Review this EF Core query for N+1 problems and
   suggest optimizations.
   ```

3. **Architecture Decision**
   ```
   Act as dotnet-architect. Should I use EF Core or Dapper for this high-throughput
   read scenario? Explain trade-offs.
   ```

## Topics Covered

### C# Language

- Async/await patterns and pitfalls
- LINQ optimization
- Records and immutability
- Pattern matching
- Nullable reference types
- Memory-efficient programming

### ASP.NET Core

- Minimal APIs and Controllers
- Dependency Injection (Scoped, Singleton, Transient, Keyed)
- Configuration with IOptions
- Middleware pipeline
- Authentication/Authorization
- Health checks

### Data Access

- Entity Framework Core best practices
- Dapper for high-performance queries
- Repository pattern
- Unit of Work
- Connection management
- Transaction handling

### Caching

- IMemoryCache
- IDistributedCache with Redis
- Multi-level caching
- Cache invalidation
- Distributed locking

### Testing

- xUnit fundamentals
- Moq for mocking
- Integration tests with WebApplicationFactory
- Test patterns and best practices

## Stack Compatibility

| Technology            | Version |
| --------------------- | ------- |
| .NET                  | 8.0+    |
| C#                    | 12+     |
| ASP.NET Core          | 8.0+    |
| Entity Framework Core | 8.0+    |
| SQL Server            | 2019+   |
| Redis                 | 6.0+    |

## Contributing

Contributions welcome! Please ensure:

- Code examples compile and follow C# conventions
- Patterns are production-tested
- Documentation is clear and includes examples

## License

MIT License - See repository root for details.
````
END THIRD-PARTY FILE 008b7b38114d741d

The third-party file has ended. Everything between the 008b7b38114d741d tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

© Seth Hobson · MIT · https://github.com/wshobson/agents/tree/HEAD/plugins/dotnet-contribution

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From the same set: [wshobson/agents](https://affpapa.org/en/nevibecode/by/wshobson/agents.md) — 405 cards

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