Conciseness

The ~420-line body is mostly dense tables rather than padded prose, but substantial detail is inlined that the body itself says belongs in the reference files — the numbering tables duplicate "complete numbering guidance" in references/document-control-procedures.md, and the 21 CFR Part 11 section (scope, record controls, audit trail, signature requirements) duplicates references/21cfr11-compliance-guide.md. Sections like KPI metrics and the basic Signature Requirements table (name, date, role) also restate content Claude already knows or that is tangential to the skill's triggers. This matches 'Mostly efficient but includes some unnecessary explanation or could be tightened' rather than the level-4 anchor's 'minor instances'.

Actionability

Concrete, executable guidance throughout: exact numbering format with a worked example ("SOP-02-001-A"), copy-paste tool commands with flags ("python scripts/document_validator.py --doc document.json --output json"), a complete sample input JSON, and specific matrices (reviewers, dispositions, change classification). Not a 5 because the advertised validator script cannot actually be run — scripts/document_validator.py is absent from the bundle — leaving the Tools section's commands non-executable as shipped; still more than the level-3 anchor's incomplete/pseudocode level since all procedural guidance is specific and complete.

Workflow Clarity

Every workflow (document control, numbering, review, change control, electronic record controls) is a clearly numbered sequence ending in an explicit bolded **Validation:** checkpoint (e.g. "Validation: Audit trail captures who, what, when for all changes"), with a feedback loop in the review workflow ("Author resubmits revised document") and checklists for complex processes (System Controls Checklist, Impact Assessment). This matches the anchor-5 example pattern of numbered steps, explicit validation, and error-recovery loops.

Progressive Disclosure

References are clearly signaled one level deep ("See references/document-control-procedures.md for complete numbering guidance" plus a Reference Documentation section describing each file's contents), but the actual bundle contains no references/, scripts/, or assets/ directories — all three referenced paths (two reference docs, one script) are dangling. Additionally, detail that should live in those files (category code tables, Part 11 requirements, metrics) is inlined in the body. This matches 'Some structure but could be better organized' rather than level 4, whose 'references mostly clear' presumes the referenced files actually exist; better than level 2 because structure and signaling in the body itself are good.

Specificity

"Covers document numbering, version control, change management, and 21 CFR Part 11 compliance" enumerates multiple concrete capabilities of the skill in third-person voice ("Covers", "Use when working on"), comparable to the anchor example 'Extract text and tables from PDF files, fill forms, merge documents'. Not a 4: the enumerated capabilities span the domain's core functions comprehensively with no significant coverage gaps.

Completeness

Explicitly answers both questions: what — "Document control system management for medical device QMS. Covers document numbering, version control, change management, and 21 CFR Part 11 compliance"; when — "Use when working on document control procedures, change control workflows, ... or regulatory documentation review". Matches the anchor's good example structure of concrete what + concrete 'Use when...' trigger phrases, so not a 4.

Trigger Term Quality

"document control procedures, change control workflows, document numbering, version management, electronic signature compliance, or regulatory documentation review" are exactly the natural phrases a QMS professional would say, with synonym variation (version control / version management). Not a 4: keyword coverage is comprehensive including synonyms, matching the 'PDF files, PDFs, forms, document extraction, .pdf' anchor's breadth (no file extensions exist in this domain to include).

Distinctiveness Conflict Risk

The medical-device QMS niche with "21 CFR Part 11" and "change control" triggers is a clear niche, but "version control" is a term users most often use for git, and "regulatory documentation review" could overlap broader regulatory-affairs skills — minor overlap risk, matching the anchor 'Mostly distinct; minor overlap risk with closely related skills'. Not a 5 because of these ambiguous generic terms; not a 3 because the domain scoping ('for medical device QMS') keeps conflicts unlikely.