Conciseness

The body is mostly operational and CLI-specific (appropriate), but the two npx commands are listed twice (intro and Workflow sections), and "Do not include any sensitive or confidential information" and "One topic per query" each appear twice (lines 65/118 and 118/158). This repetition makes it 'mostly efficient but could be tightened' — anchor 3, not 4, since the duplication goes beyond minor trimming.

Actionability

Fully executable, copy-paste-ready commands with concrete invocations ("npx ctx7@latest library React 'How to clean up useEffect with async operations'"), a good/bad query example table, quota-error recovery steps, and a Common Mistakes list covering the usual failure modes. This matches anchor 5's 'specific examples cover the common cases'.

Workflow Clarity

"Two-step process: resolve the library name to an ID, then query docs" with a MUST rule and explicit exception, a hard 3-attempt bound, and an error-handling loop (quota error → authenticate or disclosed fallback) provide clear sequencing with feedback loops. It falls short of anchor 5 only because there is no explicit checkpoint validating that returned docs actually answer the question.

Progressive Disclosure

No bundle files exist; the ~140-line body is cleanly sectioned (Workflow, Step 1 with result fields and selection process, Step 2 with query guidance, Authentication, Error Handling, Common Mistakes). At this size nothing clearly belongs in a separate file, and the structure is good with only minor gaps (the duplicated command block) — anchor 4 rather than 3, and the under-50-line exception does not apply.

Specificity

"Retrieves up-to-date documentation, API references, and code examples for any developer technology" names the domain and concrete artifacts but rests on a single action family ("retrieves"), matching anchor 4; per the judging guideline the second-person phrasing "Your training data may not reflect recent API changes" reduces it by 1.

Completeness

It explicitly answers what ("Retrieves up-to-date documentation, API references, and code examples") and when ("Use this skill whenever the user asks about a specific library, framework, SDK, CLI tool, or cloud service") with concrete trigger phrases, matching anchor 5 rather than anchor 4 where the 'when' would be less explicit.

Trigger Term Quality

"API syntax questions, configuration options, version migration issues, 'how do I' questions mentioning a library name, setup instructions, and CLI tool usage" plus named libraries (React, Next.js, Prisma, Express, Tailwind, Django, Spring Boot) gives comprehensive natural-term coverage with synonyms and concrete library names, matching the anchor-5 example.

Distinctiveness Conflict Risk

"Prefer this over web search for library documentation" establishes a clear niche, but "Always use for: ... debugging that involves library-specific behavior" and "any developer technology" over-broaden it into minor overlap with web-search and framework-specific skills, so anchor 4 fits better than 5.