Conciseness

The body is efficient: it never explains concepts Claude already knows (no "what a diff is" padding), uses tight bullets, and every rule is about behavior. Minor trimming is possible — e.g. "Do not say 'everything works'" in Explanation Standards restates the caveat rule from "Keep important caveats visible" and "what was and was not checked" in Verify. It is above the 3 anchor (only isolated tightening needed) but short of the 5 anchor's every-token-earns-its-place lean.

Actionability

Concrete, specific guidance throughout: a 5-level ordered evidence hierarchy, a copy-paste markdown answer template, exact phrasing rules ("Say 'measured faster' only when before/after measurements exist"), a term-translation table, and fact-vs-judgment examples. Per the rubric's scoring note, the absence of code is not penalized for an instruction-only skill. It falls short of 5 because there is no worked example of a filled-in answer (a real What changed/Why it matters/How I verified it block with actual paths and test names) covering a common case.

Workflow Clarity

A clearly sequenced three-step workflow (Audit → Verify → Explain) with an explicit audit checklist ("obvious bugs or regressions, missing edge cases, stale assumptions, unverified claims"), an ordered verification ladder, and explicit failure/partial-verification handling ("When verification fails, report the blocker... say exactly what was and was not checked"). It is not the 5 anchor because there is no feedback loop between steps — no guidance to re-audit or escalate when verification contradicts the audit's expectations — leaving minor validation gaps.

Progressive Disclosure

No bundle files exist (references/, scripts/, assets/ are absent) and none are referenced, so all content lives appropriately in SKILL.md with clear section headers and easy navigation. It is above the 3 anchor (structure is clean, nothing is buried) but not the 5 anchor: the body runs ~100 lines and the "Explanation Standards" section substantially overlaps "Explain Simply" (both govern explanation style), so the split into two sections and the length are minor organization gaps.

Specificity

"Audit work, verify claims with concrete evidence, and explain the result in simple grade-5 language" lists several specific concrete actions (audit, evidence-based verification, grade-5 explanation) with minor gaps (no mention of reporting blockers or partial verification outcomes in the description itself). It sits between the 3 anchor (only 1-2 actions) and the 5 anchor (fully comprehensive coverage) — several actions are named but the scope summary is brief.

Completeness

It explicitly answers both: the what ("Audit work, verify claims with concrete evidence, and explain the result in simple grade-5 language") and the when ("Use when the user asks to review, audit, check, verify, explain a change...") with concrete trigger phrases, matching the anchor-5 example structure exactly. Neither the what nor the when is vague or only implied.

Trigger Term Quality

"review, audit, check, verify, explain a change, explain a fix, summarize test results, validate whether something works, translate technical findings into plain language" gives comprehensive coverage of natural user phrasings with multiple synonyms (review/audit/check, verify/validate, explain/translate). Not below 4 because no common variation of how a user would request this is obviously missing; file extensions are inapplicable to a non-file skill.

Distinctiveness Conflict Risk

"review, audit, check, verify" are broad trigger words that overlap heavily with common code-review, testing, and verification skills, so it could trigger for the wrong skill despite the distinctive grade-5-plain-language angle. It is not the 2 anchor because the combined audit-plus-verify-plus-plain-language-explain mission is more specific than generic file/code helpers, and not the 4 anchor because the trigger list itself gives no signals that would disambiguate it from dedicated review or verify skills.