csharp-developer
Use when building C# applications with .NET 8+, ASP.NET Core APIs, or Blazor web apps. Builds REST APIs using minimal or controller-based routing, configures database access with Entity Framework Core, implements async patterns and cancellation, structures applications with CQRS via MediatR, and scaffolds Blazor components with state management. Invoke for C#, .NET, ASP.NET Core, Blazor, Entity Framework, EF Core, Minimal API, MAUI, SignalR.
94
92%
Does it follow best practices?
Impact
97%
1.38xAverage score across 3 eval scenarios
Passed
No known issues
Quality
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a strong skill description that clearly defines its scope within the C#/.NET ecosystem, lists concrete actions it performs, and provides explicit trigger guidance both at the beginning ('Use when...') and end ('Invoke for...'). The description is well-structured, uses third-person voice correctly, and includes comprehensive trigger terms covering the major .NET technologies a developer would reference.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: builds REST APIs with minimal or controller-based routing, configures database access with EF Core, implements async patterns and cancellation, structures apps with CQRS via MediatR, and scaffolds Blazor components with state management. | 3 / 3 |
Completeness | Clearly answers both 'what' (builds REST APIs, configures EF Core, implements async patterns, scaffolds Blazor components) and 'when' with explicit triggers ('Use when building C# applications with .NET 8+, ASP.NET Core APIs, or Blazor web apps' and 'Invoke for C#, .NET, ASP.NET Core...'). | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural terms users would say: C#, .NET, ASP.NET Core, Blazor, Entity Framework, EF Core, Minimal API, MAUI, SignalR, REST APIs, CQRS, MediatR. These are all terms developers naturally use when seeking help in this domain. | 3 / 3 |
Distinctiveness Conflict Risk | Clearly targets the C#/.NET ecosystem with specific framework mentions (ASP.NET Core, Blazor, EF Core, MediatR, MAUI, SignalR), making it highly distinguishable from skills for other languages or general web development. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
85%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a strong skill with excellent progressive disclosure via the reference table, concrete executable examples, and a well-structured workflow with an important EF Core validation checkpoint. The main weakness is mild verbosity in the introductory sections and a trailing knowledge reference list that doesn't add actionable value. Overall it's well-crafted for guiding Claude through .NET development tasks.
Suggestions
Remove or condense the introductory sentence ('Senior C# developer with mastery of...') and the 'Knowledge Reference' list at the bottom, as these don't provide actionable guidance.
Trim the 'When to Use This Skill' section since it largely duplicates what's already conveyed by the skill's existence and reference table.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Generally efficient but includes some unnecessary framing ('Senior C# developer with mastery of...'), the 'When to Use This Skill' section largely restates what Claude can infer from context, and the 'Knowledge Reference' list at the bottom adds little value. The code examples and constraints are well-targeted though. | 2 / 3 |
Actionability | Provides fully executable code examples for Minimal API endpoints, Result pattern, CancellationToken usage, and anti-patterns with correct/incorrect comparisons. The constraints are specific and concrete with copy-paste ready code. The EF Core migration checkpoint includes exact CLI commands. | 3 / 3 |
Workflow Clarity | The core workflow is clearly sequenced with 5 steps, and critically includes an explicit EF Core validation checkpoint after step 3 with specific commands for both applying and rolling back migrations. This feedback loop for a destructive/schema-changing operation is well done. | 3 / 3 |
Progressive Disclosure | Excellent use of a reference table with clear 'Load When' conditions pointing to one-level-deep reference files. The main skill stays concise as an overview while signaling exactly when to load detailed guidance for each topic area. | 3 / 3 |
Total | 11 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- jeffallan/claude-skills
- Commit
3d95bb1
- Reviewed
Table of Contents
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