Conciseness

The body is lean and assumes Claude's competence — it never explains what a preprint, DOI, or peer review is — matching the 'efficient with minor trimmable instances' anchor. It falls short of 5 because the "Purpose" section ("Search, screen, synthesize, and cite scholarly literature and author metadata") verbatim repeats the frontmatter description and the copyright line is non-instructional boilerplate.

Actionability

Concrete specifics exist ("Verify DOI, title, authors, venue, and year"; "Extract design, population, intervention or exposure, outcomes, limitations, and identifiers"; the tool routing table for web_fetch/browser_use), but key execution details are missing: no named portals or APIs (Crossref, OpenAlex, PubMed, arXiv), no example query formulations, and no method for verifying a citation. This matches the anchor for some concrete guidance that is incomplete.

Workflow Clarity

The workflow is a clearly sequenced five-step process ("Translate the question into concepts, synonyms, exclusions, years, and study types" through "Synthesize agreements, conflicts, gaps, and confidence") with a "Completion gates" verification section — matching the anchor for a clear sequence with most checkpoints present. It is not 5 because there is no error-recovery loop (e.g., what to do when a DOI fails to resolve or records conflict).

Progressive Disclosure

The skill is under 50 lines, needs no external references (none exist in references/, scripts/, or assets/ and none are dangled), and is organized into clear sections (Purpose, Tool routing, Workflow, Completion gates, Boundaries, Delivery). This meets the simple-skill exception: well-organized sections alone earn a 5.

Specificity

"Search, screen, synthesize, and cite" lists four concrete verbs tied to a defined domain ("scholarly literature and author metadata"), matching the anchor for several specific actions with minor gaps in coverage. It falls short of 5 because it omits adjacent actions (e.g., formatting bibliographies, exporting citations) and includes no synonyms or file-type terms.

Completeness

The description has a clear "what" ("Search, screen, synthesize, and cite scholarly literature and author metadata") but no "Use when..." clause or equivalent explicit trigger guidance, which caps completeness at 3 per the judging guidelines. This matches the anchor for a clear what with the when missing or only weakly implied.

Trigger Term Quality

"scholarly literature", "cite", and "author metadata" are relevant keywords, but the common phrases users actually say — "papers", "articles", "journals", "literature review", "PubMed", "Google Scholar", "DOI" — are absent. This matches the anchor for some relevant keywords missing common variations or synonyms rather than the 'a few missing' level.

Distinctiveness Conflict Risk

"Scholarly literature and author metadata" carves a mostly distinct academic-research niche, distinct from generic document or writing skills. It is not 5 because without explicit trigger phrases it retains minor overlap risk with general web-search or research skills.