Conciseness

The ordered rules are restated three times — in the 'What is covered' bullets, the MUST-constraints, and the five workflow steps — and 'When to use this skill' duplicates the frontmatter description's trigger phrases. Mostly efficient but could be tightened; not 4 because the redundancy spans several sections, not minor instances.

Actionability

Concrete, instruction-specific guidance such as 'tests, characterization checks, build checks, or manual evidence', 'repeated knowledge, policy, mappings, validation, queries', and 'unnecessary classes, methods, parameters, branches, layers'. Mostly actionable with minor gaps since all worked detail is deferred to the reference file; not 5 because the body alone gives a skeletal procedure.

Workflow Clarity

Five clearly sequenced steps mirroring the rule priority order, with step 1 requiring identification of the verification signal and step 5 requiring the report to name it. Not 5 because there is no explicit re-validation loop after applying a recommended change; not a destructive/batch skill so no cap applies.

Progressive Disclosure

The body is a tight overview with a single real, one-level-deep reference (references/053-design-simple-rules.md, verified present) that is clearly signaled both in the MUST-read constraint and a dedicated 'Reference' section. This matches the top anchor for structure and navigation.

Specificity

Names the domain (Java design, refactoring, implementation tradeoffs) and enumerates the concrete method — 'passes the tests, reveals intention, has no duplication, and has the fewest elements' — with only minor gaps in coverage. Not 3 because it goes beyond 1-2 generic actions; not 5 because the capability list centers on a single evaluate action rather than multiple distinct actions.

Completeness

Explicitly answers both what ('evaluated with Kent Beck's simple design rules, including passes the tests, reveals intention, has no duplication, and has the fewest elements') and when ('Use when Java design... This should trigger for requests such as...') with concrete trigger phrases, matching the top anchor.

Trigger Term Quality

Natural trigger phrases are provided ('Apply simple design rules; Review this design with Beck's rules; Choose between these refactoring options; Keep this Java design simple') with synonym coverage. Not 5 because common variations such as 'Does this design pass the simple design rules?' appear only in the body, not the description.

Distinctiveness Conflict Risk

'Kent Beck's simple design rules' establishes a clear niche with distinct triggers, but 'Choose between these refactoring options' overlaps with generic refactoring/review advisors, giving minor conflict risk. Not 5 due to that overlap; not 3 since the core triggers are firmly tied to this skill.