Lists multiple specific concrete actions: enforcing SOLID principles, guard-clause style, function size limits, and intention-revealing naming. These are well-defined, concrete coding practices rather than vague abstractions.

Clearly answers both 'what' (enforce SOLID principles, guard-clause style, function size limits, intention-revealing naming) and 'when' with an explicit 'Use when...' clause covering refactoring, clean-code patterns, naming conventions, and reducing function complexity.

Includes strong natural keywords users would say: 'SOLID principles', 'guard-clause', 'function size', 'naming', 'refactoring', 'readability', 'clean-code patterns', 'naming conventions', 'function complexity'. These cover a good range of terms developers naturally use.

While it targets clean code practices specifically, terms like 'refactoring' and 'readability' could overlap with general code review or refactoring skills. The SOLID principles and guard-clause specifics help distinguish it, but there's moderate overlap risk with broader code quality skills.

Extremely lean and efficient. Every line delivers actionable guidance without explaining concepts Claude already knows. No padding or unnecessary context—just rules, limits, and patterns.

Provides concrete rules (functions < 30 lines, services < 600 lines) and specific naming examples, but lacks executable code examples showing before/after refactoring or guard clause patterns. The guidance is specific but not copy-paste ready.

This is a principles/conventions skill rather than a multi-step process skill. The single-purpose nature (enforce coding standards) is unambiguous, and the rules are clearly organized into logical categories with no sequencing ambiguity.

References to CODE_STRUCTURE.md and EFFECTIVENESS.md are well-signaled and one level deep, which is good structure. However, no bundle files were provided, so the referenced files don't actually exist, undermining the progressive disclosure promise.