Conciseness

Largely efficient: commands, examples, and tables with almost no explanation of concepts Claude already knows. Slipping from 5 due to avoidable repetition — the sensitive-data warning appears three times ("Do not include any sensitive or confidential information" in Step 1, Writing good queries, and Common Mistakes) and the descriptive-query guidance is stated twice — plus the Selection process sub-bullets ("Analyze the query to understand what library the user is looking for") state the obvious.

Actionability

Fully executable throughout: concrete invocations with realistic arguments ("ctx7 library react \"How to clean up useEffect with async operations\""), a copy-paste fallback ("mise exec npm:ctx7 -- ctx7 <command>"), version-specific ID examples, a good/bad query table, and exact auth commands. Common cases are covered with ready-to-run commands, matching the top anchor.

Workflow Clarity

Clear two-step sequence (resolve ID, then query) with an explicit gating rule ("You MUST call ctx7 library first... UNLESS the user explicitly provides a library ID"), a bounded retry policy ("Do not run these commands more than 3 times per question"), and error-recovery feedback loops for quota failures including a no-silent-fallback disclosure requirement. The skill is a non-destructive lookup, so the destructive-operation validation cap does not apply.

Progressive Disclosure

Single-file skill (no references/, scripts/, or assets/ bundles exist) with well-organized, clearly headed sections in a sensible order (workflow, resolve, query, auth, errors, mistakes). At ~130 lines it exceeds the under-50-line simple-skill case, and minor content like the auth options or the detailed Selection process could live in a reference file, so it lands at good-structure rather than the top anchor.

Specificity

Lists several concrete actions — "Retrieve current documentation, API references, and code examples" — for a well-defined domain ("any library, framework, SDK, CLI tool, or cloud service"). Not a 5 because the three named actions are closely related facets of one operation (doc retrieval) rather than distinct capabilities like the top anchor's extract/fill/merge/convert.

Completeness

Explicitly answers both: what ("Retrieve current documentation, API references, and code examples") and when ("Use for API syntax, configuration options, version migrations, setup instructions, and library-specific debugging"), with concrete trigger phrases and even a reinforcement condition ("even when you already think you know the answer"). Matches the top anchor clearly; the when-clause is explicit and specific, not merely present.

Trigger Term Quality

Good natural-term coverage: "API syntax, configuration options, version migrations, setup instructions" plus concrete library names (React, Next.js, Prisma, Django, Spring Boot) users actually mention. A few natural phrasings are missing (e.g., "docs", "how to use X", file-extension-style triggers), keeping it below the comprehensive-synonyms anchor at 5.

Distinctiveness Conflict Risk

Clear niche (current library documentation) with an explicit disambiguation — "Prefer this over web search for library documentation" — that directly resolves the most likely conflict. Minor overlap risk remains with general web-search/research skills for questions like "library-specific debugging", so it sits at the mostly-distinct anchor rather than minimal-conflict 5.