csharp-developer SKILL.md skillA

csharp-developer from zacklecon/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add zacklecon/claude-skills/csharp-developer@v1.0.0

Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
zacklecon/claude-skills
Path
skills/csharp-developer/SKILL.md
Versions recorded
5
Latest version
v1.0.0, committed Feb 2, 2026
First version recorded
Dec 15, 2025
Size
3,459 bytes
Repository stars
3
License
MIT

Use when building C# applications with .NET 8+, ASP.NET Core APIs, or Blazor web apps. Invoke for Entity Framework Core, minimal APIs, async patterns, CQRS with MediatR.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# C# Developer

Senior C# developer with mastery of .NET 8+ and Microsoft ecosystem. Specializes in high-performance web APIs, cloud-native solutions, and modern C# language features.

## Role Definition

You are a senior C# developer with 10+ years of .NET experience. You specialize in ASP.NET Core, Blazor, Entity Framework Core, and modern C# 12 features. You build scalable, type-safe applications with clean architecture patterns and focus on performance optimization.

## When to Use This Skill

- Building ASP.NET Core APIs (Minimal or Controller-based)
- Implementing Entity Framework Core data access
- Creating Blazor web applications (Server/WASM)
- Optimizing .NET performance with Span<T>, Memory<T>
- Implementing CQRS with MediatR
- Setting up authentication/authorization

## Core Workflow

1. **Analyze solution** - Review .csproj files, NuGet packages, architecture
2. **Design models** - Create domain models, DTOs, validation
3. **Implement** - Write endpoints, repositories, services with DI
4. **Optimize** - Apply async patterns, caching, performance tuning
5. **Test** - Write xUnit tests with TestServer, achieve 80%+ coverage

## Reference Guide
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add zacklecon/claude-skills/csharp-developer@sha256:ce9c58fc4ce1e8ad

The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_hn6k5mm5i2v7kyec.svg)](https://markdownregistry.com/a/art_hn6k5mm5i2v7kyec)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Dec 15, 2025 and Feb 2, 2026, about one every 12 days.

versioncommittedcommitsizeaudit
v1.0.0 latest2026-02-02 7bbd06a 3,459 BA view · diff
v1.0.02026-02-02 5bf7075 3,676 BA view · diff
git:20260119.97b60262026-01-19 97b6026 3,526 BA view · diff
git:20251221.830153d2025-12-21 830153d 3,586 BA view · diff
git:20251215.f7971052025-12-15 f797105 3,599 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (3459 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

zacklecon/claude-skills · 3 stars · license MIT · pushed 2026-10-13 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hn6k5mm5i2v7kyec
GET https://markdownregistry.com/api/v1/resolve?ref=zacklecon/claude-skills/csharp-developer
GET https://markdownregistry.com/api/v1/blob/ce9c58fc4ce1e8ad35f0160cf595cf0d11f04e7270e57d6f2548d89e2e3f42fb

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from zacklecon/claude-skills

CLAUDE.md CLAUDE.md file
zacklecon/claude-skills · CLAUDE.md
git:20260224.3481421 · audit A · 3 stars
angular-architect SKILL.md skill
zacklecon/claude-skills · skills/angular-architect/SKILL.md · Use when building Angular 17+ applications with standalone components or signals. Invoke for enterprise apps, RxJS…
v1.0.0 · audit A · 3 stars
api-designer SKILL.md skill
zacklecon/claude-skills · skills/api-designer/SKILL.md · Use when designing REST or GraphQL APIs, creating OpenAPI specifications, or planning API architecture. Invoke for…
v1.0.0 · audit A · 3 stars
architecture-designer SKILL.md skill
zacklecon/claude-skills · skills/architecture-designer/SKILL.md · Use when designing new system architecture, reviewing existing designs, or making architectural decisions. Invoke for…
v1.0.0 · audit A · 3 stars
atlassian-mcp SKILL.md skill
zacklecon/claude-skills · skills/atlassian-mcp/SKILL.md · Use when querying Jira issues, searching Confluence pages, creating tickets, updating documentation, or integrating…
v1.0.0 · audit A · 3 stars
chaos-engineer SKILL.md skill
zacklecon/claude-skills · skills/chaos-engineer/SKILL.md · Use when designing chaos experiments, implementing failure injection frameworks, or conducting game day exercises…
v1.0.0 · audit A · 3 stars
cli-developer SKILL.md skill
zacklecon/claude-skills · skills/cli-developer/SKILL.md · Use when building CLI tools, implementing argument parsing, or adding interactive prompts. Invoke for CLI design…
v1.0.0 · audit A · 3 stars
cloud-architect SKILL.md skill
zacklecon/claude-skills · skills/cloud-architect/SKILL.md · Use when designing cloud architectures, planning migrations, or optimizing multi-cloud deployments. Invoke for…
v1.0.0 · audit A · 3 stars
code-documenter SKILL.md skill
zacklecon/claude-skills · skills/code-documenter/SKILL.md · Use when adding docstrings, creating API documentation, or building documentation sites. Invoke for OpenAPI/Swagger…
v1.0.0 · audit A · 3 stars
code-reviewer SKILL.md skill
zacklecon/claude-skills · skills/code-reviewer/SKILL.md · Use when reviewing pull requests, conducting code quality audits, or identifying security vulnerabilities. Invoke for…
v1.0.0 · audit A · 3 stars
cpp-pro SKILL.md skill
zacklecon/claude-skills · skills/cpp-pro/SKILL.md · Use when building C++ applications requiring modern C++20/23 features, template metaprogramming, or high-performance…
v1.0.0 · audit A · 3 stars
database-optimizer SKILL.md skill
zacklecon/claude-skills · skills/database-optimizer/SKILL.md · Use when investigating slow queries, analyzing execution plans, or optimizing database performance. Invoke for index…
v1.0.0 · audit A · 3 stars

Every file in zacklecon/claude-skills

Other files named csharp-developer

csharp-developer SKILL.md skill
jeffallan/claude-skills · skills/csharp-developer/SKILL.md · Use when building C# applications with .NET 8+, ASP.NET Core APIs, or Blazor web apps. Builds REST APIs using minimal…
v1.1.0 · audit A · 12,195 stars
csharp-developer SKILL.md skill
jahidulislamseo/antigravity-ai-skills · skills/csharp-developer/SKILL.md · Use when building C# applications with .NET 8+, ASP.NET Core APIs, or Blazor web apps. Builds REST APIs using minimal…
v1.1.0 · audit A · 4 stars

Browse by kind, by grade A, or by owner.