Conciseness

The body is efficient — dense tables, hard limits ('Title 16-24 chars where possible (≤24 max)', 'exactly three tabs'), and a JSON array example with no explanations of concepts Claude already knows. A few sections could be trimmed, such as the motivational framing 'You are not just rewriting Google or Meta ads' and the 'The main idea' prose, keeping it at level 4 (efficient, minor over-explanation) rather than level 5 (every token earns its place).

Actionability

As an instruction-only skill, the guidance is fully executable: exact character limits, the required JSON hint format (e.g. '["hint one", "hint two"]'), mandated tab names, batch sizes ('2 batches of ≤50'), header-name discipline, and verified copy-paste prompts in references/prompts.md. This matches the level-5 anchor — copy-paste ready guidance covering the common cases.

Workflow Clarity

The 9-step table gives a clear sequence with an explicit validation checkpoint per step ('Move on when…'), including a pass/fix checklist (step 8), dedup and scoring (step 7), and a qualified-reviewer gate (step 9). For a batch operation (100+ ads), this fully satisfies the feedback-loop requirement, matching the level-5 anchor with explicit validation steps and checklists.

Progressive Disclosure

The ~78-line SKILL.md is a clean overview with three clearly signaled, one-level-deep references — references/inputs-and-export.md, references/prompts.md (full prompt text), and references/validation-checklist.md — all verified to exist, with no nested references. This matches the level-5 anchor: content appropriately split and easy to navigate.

Specificity

The description lists multiple concrete actions — 'Build, review, and scale a ChatGPT Ads campaign', 'writing context hints (not keywords)', 'scaling to 100+ upload-ready ads', and the '9-step golden-path workflow with copy-paste prompts' — covering the domain comprehensively. It matches the level-5 anchor (multiple specific concrete actions, comprehensive coverage) and exceeds level 4, which allows coverage gaps.

Completeness

It explicitly answers 'what' ('Build, review, and scale a ChatGPT Ads campaign from your existing Google/Meta/Microsoft text ads and website') and 'when' with concrete trigger phrases in an explicit 'Use when...' clause. This matches the level-5 anchor exactly and is more explicit than level 4's softer 'when'.

Trigger Term Quality

'Use when launching ChatGPT Ads, building a ChatGPT Ads campaign workbook, repurposing existing search/social ads for ChatGPT, writing context hints' gives good natural-phrase coverage. It falls short of level 5's 'comprehensive coverage of natural terms including synonyms' because it omits variations users would plausibly say, such as 'OpenAI Ads' or 'Ads in ChatGPT' (terms the skill body itself uses), while clearly exceeding level 3's partial coverage.

Distinctiveness Conflict Risk

It occupies a clear niche (ChatGPT Ads specifically, not generic ad management) with distinct triggers like 'context hints' and 'ChatGPT Ads campaign workbook', giving minimal conflict risk with other ad/marketing skills. It is not merely 'mostly distinct' (level 4) — the triggers are uniquely tied to this skill.