Conciseness

The ~60-line body is dense operational instruction with zero concept explanations Claude already knows — every line directs behavior ("Normalize inputs and retain lineage to each export", "Keep every account change as a draft until the main mutation gate passes"). It matches the lean anchor where every token earns its place; there is no padding to trim, so it is not a 4.

Actionability

Guidance is mostly concrete: named reference files with read conditions ("Read ads/references/gaql-notes.md before building keyword, negative-keyword, or search-term evidence"), an explicit input checklist, and separation of observations/diagnoses/recommendations. It falls short of the fully-executable anchor because no examples or snippets are inlined — no GAQL query pattern, no sample of the "common JSON contracts" the output must satisfy — so execution depends entirely on the referenced files.

Workflow Clarity

The 8-step procedure is clearly sequenced with several checkpoints (retain lineage, mark uncertainty and contradictions, schema-valid findings, keep changes as drafts until the mutation gate passes). It is not a 5 because there is no explicit validate→fix→retry feedback loop — e.g. what to do when findings fail schema validation — but the read-only scope and the mutation gate keep it above anchor 3's implicit-checkpoint level.

Progressive Disclosure

The body is an overview that appropriately delegates detail to one-level-deep references with clear signals and conditions ("only the relevant shared measurement, benchmark, creative, automation, policy, and scoring references"). It falls short of anchor 5 because the reference paths are plugin-root-relative and require an inline resolution parenthetical ("resolve it from the plugin root, the directory that holds ads/ and skills/, or from the skills directory in a standalone install"), which adds navigation friction; a simple skill-relative path would make navigation unambiguous.

Specificity

The description lists multiple concrete audit actions across the whole domain — "Audit Google Ads measurement, Search, Shopping, Performance Max, Demand Gen, ... keywords and search terms, negative-keyword generation or review, creative assets, bidding, budgets, settings, and policy" — giving comprehensive coverage with no vague filler. It is not a 4 because there are no minor coverage gaps; every major Google Ads audit surface is named, and it stays in third person.

Completeness

It explicitly answers both questions: the "what" is the concrete audit scope in the first sentence, and the "when" is the explicit "Use for Google Ads, AdWords, ..." trigger clause. It also adds scope boundaries ("Read-only; use ads-optimize to change campaigns"), which exceeds the anchor-5 example's clarity; it is clearly not a 4, where the "when" would be less specific.

Trigger Term Quality

The "Use for" clause covers natural user phrasing plus synonyms and abbreviations: "Google Ads, AdWords, Search campaigns, search terms reports, broad negatives, Shopping, Performance Max, PMax, Demand Gen, GAQL, or Google conversion tracking". It matches the top anchor (comprehensive natural terms including synonyms) rather than 4, since even niche variations like "AdWords", "PMax", and "broad negatives" are present.

Distinctiveness Conflict Risk

It occupies a clear niche (Google Ads auditing) and actively reduces conflict risk by declaring "Read-only; use ads-optimize to change campaigns", routing mutation requests to a sibling skill. The trigger terms are platform-specific enough that it would not fire for general ads or analytics skills, matching the minimal-conflict anchor rather than 4's "minor overlap risk".