Conciseness

The body is dense and assumes Claude's competence (it never explains what an RSA or an angle matrix is), but the ad-account-auditor, message-match, and O1/O2 points each repeat across Skill Contract, Instructions, and Next Best Skill, and the suite-protocol vocabulary ("dependency tuple", "authorized idempotent claims operation: propose") could be tightened. Efficient overall with minor trimming opportunities, matching the level-4 anchor rather than the every-token-earns-its-place level-5 anchor.

Actionability

Quick Start gives literal copy-paste prompts, and the numbered steps point to concrete, real files (ad-format-specs.md char limits, angle-matrix.md hook patterns and message-match table). It is not fully a 5 because key mechanics like registry-events.py and skill-contract.md are invoked by name without any invocation detail or template inline, leaving minor execution gaps.

Workflow Clarity

The 8-step sequence (confirm inputs → read destination → load specs → draft → write → enforce message-match → pre-check claims/policy → de-slop) has explicit validation checkpoints at multiple stages plus a 4-item quality-bar checklist with a fix-or-report feedback loop ("If any item fails, fix it or report it in the handoff — do not ship silently"). The batch-operation validation cap does not apply because validation is present and explicit.

Progressive Disclosure

The SKILL.md body is a genuine overview; the two one-level-deep references (references/ad-format-specs.md, references/angle-matrix.md) both exist in the bundle, are clearly signaled inline at the point of need, and are catalogued with one-line descriptions in Reference Materials. Detailed material (char-limit tables, hook patterns, the message-match map template) is appropriately split out rather than inlined.

Specificity

"produces ad units — RSA headlines/descriptions, hooks, and an angle matrix — message-matched to the destination landing page" names multiple concrete, specific deliverables with comprehensive coverage of the skill's output surface. It exceeds the level-4 anchor because there is no meaningful coverage gap in what the skill produces.

Completeness

Both halves are explicit: a clear what ("produces ad units — RSA headlines/descriptions, hooks, and an angle matrix") and an explicit when with concrete trigger phrases ("Use when the user asks to..."). Voice is third person ("produces"), so no voice penalty applies.

Trigger Term Quality

Triggers are natural phrases a user would actually say — "write ad copy", "generate RSA headlines", "build ad creative at volume" — reinforced by Chinese synonyms (广告创意/广告文案/RSA标题). It falls short of 5 because common variations like "paid ads", "search ad copy", "social ad copy", or "ad text" are absent.

Distinctiveness Conflict Risk

The negative boundaries are explicit and named: "Not for scoring an ad account — use ad-account-auditor; not for the post-click page — use landing-optimizer; not for organic articles — use content-writer." This is a clear niche with distinct triggers and minimal conflict risk.