Conciseness

Lean and efficient throughout — short bullets, punchy directives like 'Don't assume. Don't hide confusion.', and no padding or explanation of concepts Claude already knows; every token earns its place.

Actionability

Concrete, specific directives ('State your assumptions explicitly', 'Match existing style') plus actionable task-transformation examples ('Add validation' → 'Write tests for invalid inputs, then make them pass'), though it is behavioral guidance rather than executable code.

Workflow Clarity

Section 4 gives a clear sequenced plan template with per-step 'verify: [check]' checkpoints and a 'loop until verified' feedback loop; minor gaps as the overall skill is principle-oriented rather than a single operational workflow.

Progressive Disclosure

Well-organized into four numbered sections with clear headers, self-contained with no external references needed; sits just over the ~50-line simple-skill threshold, keeping it short of a clean 5.

Specificity

Lists several concrete actions — 'avoid overcomplication', 'make surgical changes', 'surface assumptions', 'define verifiable success criteria' — giving solid coverage, though they are behavioral directives rather than the concrete file operations of the 5 anchor.

Completeness

Explicitly answers both what ('Behavioral guidelines to reduce common LLM coding mistakes') and when ('Use when writing, reviewing, or refactoring code') with concrete trigger phrases, matching the 5 anchor.

Trigger Term Quality

Includes natural phrases users would say ('writing, reviewing, or refactoring code') with good coverage, but misses common synonyms like 'code review', 'simplify code', or 'clean up code'.

Distinctiveness Conflict Risk

The 'behavioral guidelines' framing gives it a niche, but 'writing, reviewing, or refactoring code' is broad and could overlap with many general coding skills.