Conciseness

The body is dense and assumes Claude's competence (no pillar/PDF-style concept explanations, concrete status vocabulary, exact file names like "questions.jsonl" and "manifest.json"), but several invariants are restated multiple times — the inline-report requirement appears in three places and "the report template is the authoritative list" is asserted twice within Step 7 — which could be tightened. This sits between 'efficient; minor instances of over-explanation' (4) and 'lean and efficient; every token earns its place' (5), noticeably above the midpoint but not flawless.

Actionability

For an instruction-only skill the guidance is fully actionable: exact tool names ("aws___read_documentation"), concrete scratch-file layout (corpus/, questions.jsonl, best-practices.jsonl, manifest.json), a five-value status vocabulary, an exact report first line ("# Well-Architected Review:"), a numbered report-section checklist, and a verbatim follow-up script. Anchor 4 would require minor gaps in executable specificity; none are present in what the body itself carries.

Workflow Clarity

Eight clearly sequenced steps with an explicit validation gate ("you MUST NOT begin Step 5 until corpus/manifest.json reports valid: true"), internal completeness gates in Steps 3 and 6, a coverage audit before the executive summary, and an error-recovery rule ("a surfaced error, not a gap to invent around") — matching the anchor with explicit validation, feedback loops, and checklists. Not 4, because no checkpoint is left implicit.

Progressive Disclosure

The body is a clear overview with a well-signaled reference list (one line each, telling you when to read each file), details correctly split into 7 reference files plus a report template asset, and all referenced paths exist on disk. Verified the bundle files contain no second-level references, so navigation is one level deep — matching the top anchor exactly.

Specificity

Lists multiple concrete actions — "evaluating every framework question across all pillars", "analyzing code, IaC, and configurations", "evidence-backed findings with Eisenhower-prioritized remediation" — and enumerates five distinct review modes with their concrete outputs ("BP ID citations", "maturity scorecard with per-pillar scores"), matching the comprehensive-coverage anchor. It is not score 4 because coverage of what the skill does is complete rather than having minor gaps.

Completeness

Explicitly answers 'what' ("Performs a full AWS Well-Architected Framework review...") and 'when' ("Triggers on mentions of..." with concrete trigger phrases), plus explicit non-triggers ("Does not apply to single-pillar deep-dives, learning WA concepts, ADRs, or migration readiness assessments"). This matches the anchor that requires both what and when with concrete trigger phrases; a 4 would require the 'when' to be less explicit.

Trigger Term Quality

"Triggers on mentions of Well-Architected review, WA review, WAR, pillar assessment, architecture review across pillars, workload assessment, cloud readiness evaluation, or a Well-Architected score, grade, or scorecard request" covers natural phrasings plus abbreviations and synonyms (WA, WAR, grade, scorecard). No common user phrasing is missing, matching the synonym-inclusive anchor 5 rather than the 'a few natural terms missing' anchor 4.

Distinctiveness Conflict Risk

A clear AWS Well-Architected review niche with distinct triggers and an explicit exclusion list that further separates it from adjacent skills (single-pillar deep-dives, migration readiness). Minimal conflict risk — matches anchor 5; anchor 4 would imply minor overlap risk with closely related skills, which the exclusion clause mitigates.