Conciseness

Core sections are lean, but the 'About this skill' footer is promotional padding ('Skills files are free to clone; hosted Synter is never a Free cloud tier') and the 'Solo / Scale / Crucible Managed (never a Free cloud tier)' hosting note is repeated twice, matching 'mostly efficient but includes some unnecessary explanation or could be tightened'. Not 2 because no concepts are over-explained.

Actionability

Concrete tool names throughout (pull_meta_ads_performance, meta_ads_create_ad, get_pixel_health) and a job-to-tool table give real guidance, but key execution details are missing: no invocation parameters, no output handling, and vague criteria like 'flag CPA spikes' without thresholds — 'concrete guidance but incomplete; missing key details'.

Workflow Clarity

The operator loop (Read → Creative → Draft → Measurement → Gate) is clearly sequenced with explicit checkpoints — 'leave paused until human approve', 'campaign-preflight + launch-gates before enable', 'confirm Pixel + CAPI' — so the destructive-operation cap does not apply. Falls short of 5 because no error-recovery or re-check feedback loops are described.

Progressive Disclosure

No bundle files exist (references/, scripts/, assets/ are absent), and the body is short with clear sections (Prerequisites, Core MCP tools, Operator loop, Related skills), with sibling-skill references clearly signaled. Kept at 4 rather than the simple-skill 5 because the marketing footer is misplaced content that clutters otherwise good organization.

Specificity

Lists several concrete actions — 'pull performance, create/draft ads, and stage budget or creative changes' — matching the anchor for several specific actions with minor gaps (pause and pixel-health operations from the body are absent, and 'with human approve ≠ activate' is garbled rather than a clear action).

Completeness

Explicitly answers both: the 'what' is concrete (pull performance, create/draft ads, stage budget/creative changes) and the 'when' is an explicit 'Use when' clause with concrete trigger phrases, matching the top anchor. Not 4 because the when-clause is specific, not merely present.

Trigger Term Quality

Good natural keyword coverage — 'diagnosing Learning Phase, creative fatigue, Advantage+, or Meta campaign ops' are phrases a Meta ads manager would actually say, though a few common variations (CPA, scaling, Facebook ads manager, ad account) are missing.

Distinctiveness Conflict Risk

Scoped to 'via Synter MCP' / 'through Synter' with Meta-specific triggers, giving a clear niche; minor overlap risk remains with closely related sibling skills — 'creative fatigue' is also the trigger domain of ad-creative-fatigue-detector.