Home / jnpiyush / agentx · .github/skills/languages/csharp/SKILL.md · GitHub

csharp skillA

csharp is agent-read markdown (skill) from jnpiyush/agentx: Write production-ready C# and .NET code following modern best practices. Use when building .NET applications, writing async/await code, using Entity Framework Core, implementing dependency injection, configuring nullable reference types, or optimizing C# performance..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

What the file says

# C# / .NET Development

> **Purpose**: Production-ready C# and .NET development standards for building secure, performant, maintainable applications. 
> **Audience**: Engineers building .NET applications with C#, ASP.NET Core, Entity Framework Core. 
> **Standard**: Follows [github/awesome-copilot](https://github.com/github/awesome-copilot) .NET development patterns.

---

## When to Use This Skill

- Building .NET applications with C#
- Writing async/await code patterns
- Using Entity Framework Core for data access
- Implementing dependency injection
- Configuring nullable reference types

## Decision Tree

```
C# Project Decision
+-- Building a web API?
|   +-- REST API? -> ASP.NET Core Minimal API or Controllers
|   +-- gRPC service? -> ASP.NET Core gRPC
+-- Data access needed?
|   +-- Relational DB? -> Entity Framework Core
|   +-- NoSQL / document? -> Azure Cosmos DB SDK
|   +-- Simple queries? -> Dapper
+-- Background processing?
|   +-- Scheduled jobs? -> IHostedService / BackgroundService
|   +-- Message-driven? -> Azure Service Bus + Worker Service
+-- Desktop / cross-platform UI?
|   +-- Cross-platform? -> .NET MAUI
|   +-- Windows only? -> WPF or WinForms
…

Read the whole file at its exact version.

How to install

Latest version
mdr add jnpiyush/agentx/csharp@v1.0.0
Exact content
mdr add jnpiyush/agentx/csharp@sha256:9ca724f3bc7a74f5

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

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Versions

versioncommittedcommitsizeaudit
v1.0.0 latest2026-09-15 f17c505 6,353 BA view · diff
v1.0.02026-03-01 969f335 6,351 BA view · diff
v1.0.02026-02-28 aa03a2e 4,749 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (6353 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

jnpiyush/agentx · 16 stars · license Apache-2.0 · pushed 2026-09-21 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_33rvvvoxkuxlbxj2
GET https://markdownregistry.com/api/v1/resolve?ref=jnpiyush/agentx/csharp
GET https://markdownregistry.com/api/v1/blob/9ca724f3bc7a74f54d4fd2b2e431f152fca90fc0b472278cb7573aea3c3c9fbf

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