Conciseness

The bulk is concrete PASS/FAIL examples, but sections re-teach concepts Claude already knows: "Code is read more than written", the KISS/DRY/YAGNI principle definitions ("Don't build features before they're needed", "Avoid copy-paste programming"), and standard React/async knowledge like using Promise.all for parallel fetches. Mostly efficient with some unnecessary explanation, matching the 3 anchor rather than 2 since the padding is a minority of the ~550 lines.

Actionability

Nearly every standard is encoded as executable copy-paste TypeScript (naming, immutability spread patterns, zod validation, early returns), which is the right form for a conventions skill. Minor gaps keep it below 5: several examples are placeholders rather than runnable code ("function getMarket... { // Implementation }", "// 100 lines of code"), so the guidance is mostly but not fully executable.

Workflow Clarity

This is a single-purpose conventions/review skill with no multi-step procedure, and the single action — apply the PASS/FAIL standards — is unambiguous thanks to the "When to Activate" and "Scope Boundaries" sections. It does not reach 5 because the skill frames itself around "Reviewing code for quality" yet never sequences that review action (no order of checks, no reporting format), a minor gap for a simple skill.

Progressive Disclosure

Section headers give real structure, but ~550 lines are inlined monolithically, including whole "React Best Practices" and "API Design Standards" sections that the skill's own scope boundary defers to frontend/backend skills — content that clearly belongs in separate reference files. The one file reference, "rules/common/coding-style.md", points to a path that does not exist in this bundle (no references/ directory at all), so references are present but not clearly verifiable/signaled.

Specificity

The description lists several concrete areas — "coding conventions for naming, readability, immutability, and code-quality review" — going beyond naming the domain alone. It falls short of the 5 anchor because it names topic areas rather than multiple distinct concrete actions, leaving minor coverage gaps.

Completeness

It explicitly answers both questions: the "what" is "Baseline cross-project coding conventions for naming, readability, immutability, and code-quality review", and the "when" is the concrete "Use when reviewing code quality or naming with no framework-specific skill that applies". Both are explicit with concrete trigger phrases, matching the 5 anchor.

Trigger Term Quality

Natural trigger phrases like "coding conventions", "naming", "code quality", "readability", and "reviewing code quality or naming" map well to what a user would actually say. Common variations such as "best practices", "clean code", or "style guide" are missing, so it is not the comprehensive 5.

Distinctiveness Conflict Risk

The explicit routing — "Use detailed frontend or backend skills for framework-specific patterns" and the "no framework-specific skill that applies" condition — carves out a clear baseline niche. Minor overlap risk remains with generic code-review/clean-code skills triggered by "code quality".