Conciseness

Mostly efficient and substantive, but the boundary disclaimer ('this skill does not build creative / does not score the RQS') is restated roughly five times across the intro, step 5, Save Results, Reference Materials, and Next Best Skill, and 'Primary next skill: use the Next Best Skill below' is pure filler. Not 2: there is no concept-teaching padding — the repetition is one fixable pattern.

Actionability

Gives near-copy-ready commands ('python3 "${CLAUDE_PLUGIN_ROOT}/scripts/connectors/ledger.py" record <ad-set> --source paid --data ...' plus 'ledger.py trend ... --field ctr') and concrete decision rules (CTR decays + frequency rises + reach still growing → Rotate-creative). Not 5: the ledger example carries '...' value placeholders rather than one complete runnable invocation with sample values.

Workflow Clarity

Six ordered steps with explicit validation checkpoints — stop if still in learning phase, verify a CVR drop against the GA4/ecommerce truth set before firing a trigger, Hold when decay is within noise — plus a Decision Gate with stop-and-ask vs continue-silently conditions and 'Done when' criteria. Not 4: checkpoints and error-recovery routing are explicit, and the workflow is read-only so no destructive/batch cap applies.

Progressive Disclosure

Well-signaled one-level-deep references (skill-contract.md, measurement-protocol.md, roas-benchmark.md, scripts/connectors/README.md), each annotated with its purpose in a Reference Materials section and cited where relevant in the steps. Not 5: several references (SECURITY.md, CONNECTORS.md, measurement-protocol.md) are scattered mid-instructions, and no bundle files are present to verify the referenced paths resolve.

Specificity

Lists multiple concrete actions — 'reads frequency, CTR and CVR decay against an early-flight baseline' and 'returns Rotate-creative / Widen-audience / Hold triggers with a per-ad-set fatigue read' — comprehensively covering the skill's job. Not 4: coverage is comprehensive rather than having minor gaps.

Completeness

Explicitly answers both — what ('reads frequency, CTR and CVR decay... returns... triggers') and when (a 'Use when' clause with three concrete quoted trigger phrases), plus explicit negative boundaries. Not 4: the 'when' is fully explicit, not merely present.

Trigger Term Quality

Quoted natural user phrases ('is my ad fatiguing', 'why is CTR dropping at scale', 'should I rotate creative / widen the audience') that users would actually say. Not 5: a few common synonyms such as 'audience saturation' or 'frequency too high' are absent as trigger terms.

Distinctiveness Conflict Risk

Clear niche (fatigue/saturation diagnosis) with explicit disambiguation: 'Not for building the replacement creative — use ad-creative-builder; not for the RQS score or vetoes — use ad-account-auditor'. Not 4: conflict risk is actively eliminated, not just minor.