cpp-pro

Writes, optimizes, and debugs C++ applications using modern C++20/23 features, template metaprogramming, and high-performance systems techniques. Use when building or refactoring C++ code requiring concepts, ranges, coroutines, SIMD optimization, or careful memory management — or when addressing performance bottlenecks, concurrency issues, and build system configuration with CMake.

Quality

88%

Does it follow best practices?

Impact

—

No eval scenarios have been run

Securityby

Passed

No known issues

Quality

Content

77%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This is a solid, well-structured C++ skill with strong actionability through executable code examples and a clear workflow with validation checkpoints. Its main weaknesses are moderate verbosity in the constraints section (listing things Claude already knows) and the inability to verify the referenced bundle files exist. The progressive disclosure structure is well-designed in concept but unverifiable without bundle files.

Suggestions

Trim the MUST DO/MUST NOT DO lists to only non-obvious constraints that Claude wouldn't already follow — items like 'prefer smart pointers over raw new/delete' and 'write const-correct code' are standard C++ best practices Claude already knows.

Remove the introductory role description ('Senior C++ developer with deep expertise...') as it wastes tokens on persona framing rather than actionable guidance.

Dimension	Reasoning	Score
Conciseness	Generally efficient but includes some unnecessary framing ('Senior C++ developer with deep expertise...') and the MUST DO/MUST NOT DO lists contain items Claude already knows well (e.g., 'prefer smart pointers', 'use const-correct code'). The code examples are useful but the RAII wrapper is somewhat lengthy for a skill file.	2 / 3
Actionability	Provides fully executable, copy-paste-ready C++ code examples for concepts, RAII wrappers, and smart pointers. The constraints are specific and concrete, and the output template gives a clear deliverable checklist.	3 / 3
Workflow Clarity	The core workflow has a clear 5-step sequence with explicit validation checkpoints: step 4 requires fixing all sanitizer issues before proceeding, and step 5 includes a feedback loop (re-measure if targets not met). This properly handles the destructive/risky nature of performance and memory work.	3 / 3
Progressive Disclosure	The reference table with 'Load When' guidance is well-structured and clearly signaled, but no bundle files were provided to verify the referenced paths exist. The main file itself includes substantial inline content (constraints lists, three code examples) that could arguably be in reference files, making the skill somewhat front-heavy.	2 / 3
	Total	10 / 12 Passed

Description

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 an excellent skill description that clearly communicates specific capabilities, includes abundant natural trigger terms, explicitly states both what the skill does and when to use it, and carves out a distinct niche. It uses proper third-person voice throughout and avoids vague language or buzzwords. The description is comprehensive yet concise, covering the full scope from writing to debugging to build configuration.

Dimension	Reasoning	Score
Specificity	Lists multiple specific concrete actions: 'Writes, optimizes, and debugs C++ applications' along with specific techniques like 'template metaprogramming', 'SIMD optimization', 'memory management', 'concurrency issues', and 'build system configuration with CMake'.	3 / 3
Completeness	Clearly answers both 'what' (writes, optimizes, debugs C++ applications using modern features and high-performance techniques) and 'when' (explicit 'Use when' clause covering building/refactoring C++ code with specific features, addressing performance bottlenecks, concurrency issues, and CMake configuration).	3 / 3
Trigger Term Quality	Excellent coverage of natural terms a user would say: 'C++', 'C++20/23', 'template metaprogramming', 'concepts', 'ranges', 'coroutines', 'SIMD', 'memory management', 'performance bottlenecks', 'concurrency', 'CMake'. These are all terms developers naturally use when seeking C++ help.	3 / 3
Distinctiveness Conflict Risk	Highly distinctive with a clear niche: modern C++ development with specific features (C++20/23, SIMD, template metaprogramming, CMake). Unlikely to conflict with general programming skills or other language-specific skills due to the precise domain and feature set mentioned.	3 / 3
	Total	12 / 12 Passed

Validation

100%

Warnings & errors only

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: e8be415

Reviewed: 4 days ago

Table of Contents

Discovery Implementation Validation

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