Conciseness

The body is mostly lean tables and one-liners, but information repeats: the intro paragraph restates the frontmatter description, the 'When to Apply' bullets restate its trigger list, and the priority table's category/prefix columns duplicate the Quick Reference subsection headers and rule-ID prefixes. This fits 'Mostly efficient but includes some unnecessary explanation or could be tightened' rather than the minor-trimming of a 4, given three separate redundancies.

Actionability

Rule one-liners like "Use children for composition instead of renderX props" and "Move state into provider components for sibling access" are concrete directives, but there is no code or worked example anywhere in the body — all detail is delegated to rule files. This matches 'Some concrete guidance but incomplete... missing key details'; not a 2 because the directives themselves are specific and actionable as heuristics, and not a 4 because the promised detailed guidance lives entirely outside the file.

Workflow Clarity

This is a single-action reference skill — consult rule files — and that action is unambiguous: 'When to Apply' states the conditions, the priority table ranks categories, and 'How to Use' shows the file-path convention with two example paths. The React 19 section adds an explicit version guard ('Skip this section if using React 18 or earlier'). Minor gap: no instruction on how to apply a rule once read, fitting 'Clear sequence with most checkpoints present; minor validation gaps' adapted to a reference skill rather than the fully explicit flow of a 5.

Progressive Disclosure

The body is a well-organized index with one-level-deep, clearly signaled references ('Read individual rule files for detailed explanations and code examples'), but the referenced rules/ directory does not exist in the bundle — every pointer, including the two example paths, is dangling, so navigation to the skill's actual content fails. Structure and signaling alone merit a 4, but unverifiable references fit 'Some structure but could be better organized; references present but not clearly signaled' territory once the bundle structure is considered.

Specificity

"React composition patterns that scale" names the domain but describes no concrete actions the skill performs; the when-clauses ("refactoring boolean prop proliferation", "designing reusable component APIs", "reviewing component architecture") name user activities rather than capabilities. This matches the anchor 'Names domain and 1-2 concrete actions, but not comprehensive' and falls below 'Lists several specific actions' since no enumeration of what the skill provides exists.

Completeness

Both parts are present: "React composition patterns that scale" answers what, and an explicit "Use when refactoring... designing... or reviewing..." clause answers when with concrete triggers. Not a 5 because the 'what' is generic — it never states the skill provides rules, patterns, or code examples — fitting 'Has both what and when; when could be more explicit or specific' inverted: the when is strong but the what is weak.

Trigger Term Quality

Includes natural phrases users would say such as "refactoring boolean prop proliferation", "reusable component APIs", and "component architecture". Good coverage, but common variations like "compound components", "prop drilling", or "component library" are missing, matching 'Good keyword coverage; a few natural terms missing' rather than the comprehensive synonym coverage of a 5.

Distinctiveness Conflict Risk

The React composition niche is clear and the triggers (boolean props, component APIs, composition) are distinct from most skills. Minor overlap risk remains with generic code-review or React-styling skills via "reviewing component architecture", matching 'Mostly distinct; minor overlap risk with closely related skills' rather than the minimal-conflict clarity of a 5.