Conciseness

The body is lean and assumes Claude's competence — it does not re-explain what documentation or ADRs are; every section earns its place, with only a trivial duplicate mention of the templates file.

Actionability

Provides concrete, specific guidance — a literal directory tree, per-level mandatory-content checklists, and exact file paths (docs/ops/runbooks/, templates/doc-update.md) — making the instructions directly executable despite being code-free.

Workflow Clarity

Sequences the work by phase ('Quando Documentar': antes de codar, durante o design, durante a implementação, antes do deploy) and supplies a completion checklist ('Evidência de Conclusão'); no destructive/batch operations exist, so missing feedback loops do not cap the score.

Progressive Disclosure

Keeps the overview inline while deferring full templates to a single one-level-deep, clearly signaled reference (docs/skill-guides/documenter-templates.md 'apenas quando necessario'); no deeply nested references and no bundle files to misroute.

Specificity

Lists multiple concrete actions — 'documentar features, APIs, arquitetura, setup, operação, ou manter documentação existente atualizada' — matching the anchor for enumerating specific capabilities rather than vague language.

Completeness

Explicitly answers both what ('Skill de Documentação por nível de decisão') and when ('Use quando precisar documentar...' plus an explicit Trigger list), satisfying the what-AND-when anchor.

Trigger Term Quality

Broad natural-term coverage in both Portuguese and English via 'Trigger em: documentar, documentação, docs, ADR, architecture decision record, README, runbook, troubleshooting, atualizar docs', terms a user would plausibly say.

Distinctiveness Conflict Risk

Carves a clear niche (decision-level documentation) with distinctive triggers unlikely to fire for unrelated skills; not below 2 because it is not generic, and not below 3 because the niche and triggers are well differentiated.