Skills csharp-pro
📦

csharp-pro

Content revision r2 Safe ⚙️ External commands

Build Modern C# and .NET Applications

Complex .NET projects require consistent architecture, asynchronous design, performance discipline, and reliable tests. This skill provides focused C# guidance and verifiable implementation steps.

Supports: Claude Codex Code(CC)
🥉 78 Bronze

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Copy this request to your Agent. It includes the canonical Skill page and manifest.

Agent request
Review the Skillstore skill "csharp-pro" from https://skillstore.io/skills/sickn33-csharp-pro.md and its manifest at https://skillstore.io/api/skills/sickn33-csharp-pro/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.

Your Agent should still show its plan and request any confirmation required by the security policy.

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Markdown detail GET /skills/sickn33-csharp-pro.md Signed manifest GET /api/skills/sickn33-csharp-pro/manifest Signed lockfile GET /api/skills/sickn33-csharp-pro/lockfile

Test it

Using "csharp-pro". Review an asynchronous order handler that blocks on a database call.

Expected outcome:

  • Identifies the blocking call and explains its effect on request throughput.
  • Proposes asynchronous propagation, cancellation support, and explicit exception handling.
  • Defines unit tests for success, cancellation, timeout, and dependency failure.

Using "csharp-pro". Plan a migration from mutable data classes to records.

Expected outcome:

  • Classifies models by identity, mutability, serialization, and inheritance requirements.
  • Recommends records only where value semantics match domain behavior.
  • Lists compatibility tests for equality, mapping, serialization, and persistence.

Using "csharp-pro". Create a performance review plan for a high-volume parser.

Expected outcome:

A review covering allocation profiles, span usage, benchmark baselines, realistic datasets, regression thresholds, and correctness tests.

Security Audit

Safe
v5 • 7/23/2026 Open versioned report

The only static finding is a false positive caused by Markdown backticks around a documentation path. The prompt contains no executable code or malicious instructions.

1
Files scanned
63
Lines analyzed
0
Review items
0
False positives ignored

Risk Factors

⚙️ External commands (1)
SKILL.md:24
No confirmed security findings were detected by the latest completed static and semantic audit. This does not prove the skill has no side effects.
Audited by: codex View Audit History →
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Open versioned report
Security Assessment

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Academic citations (APA · BibTeX · CFF)

APA citation

sickn33. (2026). csharp-pro security audit report (audit version 5) [Author version unspecified]. Skillstore. https://skillstore.io/skills/sickn33-csharp-pro/audits/5

BibTeX citation

@techreport{sickn33-sickn33-csharp-pro-2026, author = {sickn33}, title = {csharp-pro security audit report (audit version 5)}, institution = {Skillstore}, year = {2026}, number = {5}, url = {https://skillstore.io/skills/sickn33-csharp-pro/audits/5}, note = {Author version unspecified} }

CITATION.cff

cff-version: 1.2.0 message: "If you use this Skill, cite its author and this versioned security audit report." title: "csharp-pro security audit report (audit version 5)" version: "unspecified" type: report authors: - name: "sickn33" date-released: "2026-07-23" url: "https://skillstore.io/skills/sickn33-csharp-pro/audits/5" identifiers: - type: other value: "skillstore:sickn33-csharp-pro:audit:5" description: "Skillstore immutable audit report identifier"

Skillstore Score

Why this score Evidence Confidence: High
55
Architecture
85
Maintainability
87
Content
68
Community
83
Spec Compliance

What You Can Build

Modernize a C# Codebase

Update older C# patterns with nullable types, records, pattern matching, and clearer error handling.

Design a .NET Service

Plan service boundaries, dependency injection, persistence, asynchronous workflows, and testing for an ASP.NET Core application.

Improve Reliability and Performance

Review concurrency, allocations, tests, and benchmarks to identify measurable improvements.

Try These Prompts

Explain a C# Feature 
Explain [C# feature] for a beginner. Show when to use it, common mistakes, and a small practical example.
Refactor Existing Code 
Refactor this C# component for readability and nullable safety. Preserve behavior, explain each change, and propose focused unit tests: [component].
Design an ASP.NET Core Feature 
Design [feature] for ASP.NET Core using [constraints]. Include boundaries, data flow, failure handling, asynchronous behavior, dependencies, and a testing strategy.
Analyze Performance and Concurrency 
Analyze this .NET workflow for blocking, contention, allocations, and cancellation issues: [workflow]. Propose measurable changes and a BenchmarkDotNet validation plan.

Best Practices

  • Provide the target .NET version, framework versions, constraints, and expected behavior.
  • Request tests and validation criteria with every implementation change.
  • Measure performance before and after optimization using representative workloads.

Avoid

  • Do not request architecture without explaining domain boundaries, scale, and operational constraints.
  • Do not accept asynchronous changes that omit cancellation, failure handling, or end-to-end propagation.
  • Do not apply advanced language features when simpler code communicates intent more clearly.

Frequently Asked Questions

Which C# versions does this skill support?
It can guide modern C# development when you provide the target language and .NET versions.
Can it build complete ASP.NET Core services?
It can design and generate service components, but the project still requires compilation, integration testing, and environment validation.
Does it support Entity Framework?
Yes. It can advise on models, queries, transactions, migrations, performance, and testing for Entity Framework projects.
Can it diagnose .NET performance problems?
It can identify likely issues and propose benchmarks, but reliable conclusions require profiling and measurements from the target environment.
Which testing frameworks can it use?
It covers xUnit, NUnit, Moq, FluentAssertions, and related testing patterns.
Does it replace a security review?
No. Generated code and architecture require project-specific threat modeling, dependency review, testing, and deployment controls.

Developer Details

Author

sickn33

License

MIT

Skillstore revision

r2

Version notice

The author did not declare a version.

Repository

https://github.com/sickn33/antigravity-awesome-skills/tree/main/skills/csharp-pro

Ref

f9e2c34b4f19c7f3e6b0a1e93227b5f77cc12526

Maintenance freshness

7/26/2026

Usage

25 downloads · 95 views

File structure

📄 SKILL.md

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