xcode-build-benchmark
Benchmark Xcode clean and incremental builds with repeatable inputs, timing summaries, and timestamped `.build-benchmark/` artifacts. Use when a developer wants a baseline, wants to compare before and after changes, asks to measure build performance, mentions build times, build duration, how long builds take, or wants to know if builds got faster or slower.
94
92%
Does it follow best practices?
Impact
Pending
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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 an excellent skill description that clearly defines its purpose (Xcode build benchmarking), specifies concrete outputs (timing summaries, timestamped artifacts), and provides comprehensive trigger terms covering the many natural ways a developer might ask about build performance. It follows the third-person voice convention and includes an explicit 'Use when...' clause with diverse, natural trigger phrases.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: benchmark clean and incremental builds, repeatable inputs, timing summaries, and timestamped artifacts in a specific directory (`.build-benchmark/`). Also specifies the domain (Xcode builds) clearly. | 3 / 3 |
Completeness | Clearly answers both 'what' (benchmark Xcode clean and incremental builds with repeatable inputs, timing summaries, and timestamped artifacts) and 'when' (explicit 'Use when...' clause covering multiple trigger scenarios like baseline measurement, before/after comparison, build performance questions). | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural terms a developer would use: 'baseline', 'compare before and after', 'build performance', 'build times', 'build duration', 'how long builds take', 'faster or slower'. These are highly natural phrases users would actually say. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive niche: Xcode build benchmarking with specific artifacts directory. The combination of Xcode, build benchmarking, clean vs incremental builds, and `.build-benchmark/` artifacts makes this very unlikely to conflict with other skills. | 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, well-structured skill that provides clear, actionable benchmarking guidance with a well-sequenced workflow and appropriate progressive disclosure. The content is mostly efficient, though some inline explanations of what each build type measures add minor verbosity. The concrete command examples, explicit iteration counts, statistical reporting requirements, and clear handoff points make this highly actionable.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is mostly efficient and domain-specific, but some sections could be tightened. For example, the 'Inputs To Collect' section lists things Claude could infer, and the explanations within workflow steps (e.g., explaining what zero-change builds measure) add some verbosity. However, most content is non-obvious and earns its place. | 2 / 3 |
Actionability | Provides a concrete, executable bash command with specific flags, clear workflow steps with exact iteration counts, specific flag names like `--no-cached-clean` and `--touch-file`, and precise output requirements (median, min, max). The guidance is copy-paste ready and leaves little ambiguity. | 3 / 3 |
Workflow Clarity | The 8-step workflow is clearly sequenced with explicit validation (warm-up build to validate command success), conditional steps (cached clean builds only when compilation cache is detected), and clear stopping criteria. The 'When To Stop' section provides explicit handoff guidance. The worktree consideration adds an important pre-flight check. | 3 / 3 |
Progressive Disclosure | The skill provides a clear overview with well-signaled one-level-deep references to benchmark contract, artifact format, JSON schema, and related specialist skills. Content is appropriately split between the main skill and reference files. | 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
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