Conciseness

The body is short and free of over-explanation of concepts Claude already knows — no padding about what RAII or smart pointers are — matching anchor 4's "efficient; minor instances that could be trimmed". Not 5 because a few tokens are wasted: the description is repeated verbatim in the body, and the "Do not use this skill when" bullets ("The task is unrelated to memory safety patterns") are tautological filler that earn no place.

Actionability

The instructions are entirely generic template text with zero domain content: "Clarify goals, constraints, and required inputs", "Apply relevant best practices and validate outcomes", "Provide actionable steps and verification" — every line could apply to any skill in the library and none instructs on memory safety. This matches anchor 1 ("entirely vague or abstract; no concrete code or commands"): no pattern examples, no code, no commands, and the sole pointer to `resources/implementation-playbook.md` leads to a file that does not exist.

Workflow Clarity

The instructions hint at a rough order (clarify goals → apply practices → validate → provide steps) but define no actual sequence for any memory-safety task, matching anchor 2 ("rough sequence present but many gaps; steps poorly defined; validation absent") — "validate outcomes" names validation without any checkpoint or error-recovery loop. Not 1 because a rudimentary process skeleton is present; not 3 because there are no real checkpoints and no steps specific to the domain (e.g., how to debug a leak or implement RAII).

Progressive Disclosure

The body has clean section structure and one clearly signaled one-level-deep reference ("If detailed examples are required, open `resources/implementation-playbook.md`"), but the referenced file does not exist — there is no `resources/` directory in the bundle at all. This reduces to anchor 2 ("minimal structure; references are buried/ineffective"): the promised detailed content lives nowhere, so navigation dead-ends. Not 3 because a working, well-signaled reference is the minimum for that level and here the single reference is broken.

Specificity

"Cross-language patterns for memory-safe programming including RAII, ownership, smart pointers, and resource management" lists several concrete content areas (RAII, ownership, smart pointers, resource management), comparable to anchor 4's "lists several specific actions" — though these are topics rather than executable actions, they concretely delimit the domain. Not 5 because there are minor gaps: no specific actions (e.g., detecting leaks, choosing allocation strategies) and no concrete language coverage named.

Completeness

The 'what' is clear ("Cross-language patterns for memory-safe programming including RAII, ownership, smart pointers, and resource management"), but there is no 'when' guidance — no "Use when..." clause or equivalent trigger phrasing anywhere in the description. Per the judging guideline, a missing 'Use when' clause caps completeness at 3: clear 'what' with 'when' entirely absent.

Trigger Term Quality

Terms like "RAII", "smart pointers", "ownership", and "memory-safe" are phrases developers naturally say when they need this skill, matching anchor 4's "good keyword coverage". Not 5 because common variations are missing: "memory leak", "use-after-free", "dangling pointer", and language names like C++ or Rust that users would likely mention.

Distinctiveness Conflict Risk

"RAII", "smart pointers", and "ownership" are niche, distinctive triggers unlikely to fire for unrelated skills, matching anchor 4's "mostly distinct; minor overlap risk". Not 5 because "resource management" is broad and the skill could overlap with language-specific best-practices skills (e.g., a C++ or Rust skill); not 3 because the core triggers are clearly within the memory-safety niche.