Conciseness

The body is dense with domain-specific rules Claude could not know (sync classes, Goose ownership rules, familiarity wording) and wastes nothing on concept explanations. Not 5 because two parts cost tokens without runtime value for the agent: the maintainer-only HTML comment block about the parity script, and the Quality Checks list partially duplicating the Failure Modes table.

Actionability

Fully actionable for an instruction-only skill: a question→read decision table, a connection-class→what-to-say table, six numbered rules with edge cases resolved (null ≠ 0, RASD framing), a 4-point reply shape, and a worked example reply. Every instruction is executable without inference.

Workflow Clarity

Clear 4-step sequence (pick read → check connection → answer by the six rules → shape the reply) with explicit validation checkpoints: a Quality Checks checklist, a feedback loop for clipped results ("narrow the window... and read again. Never answer from a clipped result"), page-completeness checks before ranking, and a Failure Modes symptom→cause→fix table. Read-only skill, so the destructive/batch cap does not apply.

Progressive Disclosure

Clean overview-plus-references structure: three mode files (gooseworks-adapter.md, direct-meta-adapter.md, planning-only.md) are real, clearly linked from the mode-selection list, and exactly one level deep — verified: they reference only `ads/` data docs, not further skill files. The body retains only mode-independent rules; all adapter-specific detail is correctly split out.

Specificity

"only from reads made in the same turn, with the data window and sync time on every number and a plain caveat when the connection is stale or partial" names multiple concrete, distinctive behaviors (spend, results, winning ad, paused state, why-decisions) with no coverage gaps for this skill's scope. Not 4 because the action list is comprehensive rather than having minor gaps.

Completeness

Explicitly answers both: the what ("Answer questions about a brand's Meta ads... only from reads made in the same turn, with the data window and sync time on every number") and the when ("Use it whenever a user asks how their ads are doing or why an ad action was taken") with concrete trigger phrases. Third-person voice throughout; the explicit Use-when clause satisfies the completeness cap guideline.

Trigger Term Quality

Good natural-phrase coverage: "how their ads are doing", "is it paused", "which ad is winning", "why an ad action was taken", "spend" — all things a user would actually say. Not 5 because common synonyms the body itself lists as triggers ("performance", "campaign", "delivery", "metrics", "results over a period") are absent from the description.

Distinctiveness Conflict Risk

The read-only Q&A framing and Goose-specific vocabulary carve a clear niche, but the skill sits beside a sibling `meta-ad-manager` skill covering the same Meta-ads domain, so an ad question could plausibly route to either. Mostly distinct with minor overlap risk against that closely related skill — the 4 anchor.