Conciseness

The body is dense and assumes Claude's competence — it never explains what GA4, ROAS, or UTM are, and jumps straight to domain judgment ("`generate_lead` nao e receita"). Minor trimmable instances exist: the Handoff and Integracao com Pipeline sections restate the same sibling-skill relationships (skills 21, 55, 03, 06, 05 in both), and the ROAS-2.0-destroys-value point appears in the intro and again in section 4. This fits anchor 4 ("Efficient; minor instances of over-explanation that could be trimmed") rather than anchor 3, since these are repetitions rather than unnecessary explanations.

Actionability

For an instruction-only skill, the guidance is fully concrete: exact formulas ("Margem de contribuicao = (Receita − custos variaveis antes da midia) / Receita", "Break-even ROAS = 1 / Margem de contribuicao"), per-funnel event contracts ("view_item → add_to_cart → begin_checkout → purchase"), an ID table with do/don't columns, a divergence-to-cause table, and a decision table for bidding strategy by situation. Specific examples cover the two common cases (e-commerce and lead gen), matching anchor 5's "specific examples cover the common cases" for instruction guidance.

Workflow Clarity

Sequencing is explicit ("A ordem correta e plano → contrato de evento → tag"), section 3 contains a full validation feedback loop with a gate ("identificar a causa provavel → corrigir a fonte especifica → rodar a reconciliacao de novo... So liberar escala quando a divergencia cair dentro da tolerancia declarada"), and checklists for the complex process are present ("Duplicidade testada (refresh, back-button, retry de pagamento)"). This matches anchor 5 ("explicit validation steps; feedback loops for error recovery; checklists") rather than anchor 4, which allows minor validation gaps — the budget-scaling decision is explicitly gated on the reconciliation loop.

Progressive Disclosure

Structure is good with clear section headers, tables, and a single clearly-signaled one-level-deep reference for details ("consultar `docs/skill-guides/closed-loop-revenue.md` apenas quando necessario"); no nested references exist. Not anchor 5 because the body runs ~250 lines with some inline content that the guide reference suggests could live there (full event contracts), plus organizational redundancy between the Handoff and Integracao com Pipeline sections, and the referenced guide file is not part of this bundle so the split cannot be verified — matching anchor 4 ("Good structure; most content appropriately placed; references mostly clear; minor organization gaps") over anchor 3, since nothing that clearly belongs in a separate file is bulk-inlined.

Specificity

The description gives one concrete action — "Conecta campanhas, eventos e receita em um ciclo mensuravel" — naming the domain objects but not enumerating the skill's actual capabilities (measurement plan, identity chain, reconciliation, break-even ROAS, bidding signal, consent). This matches anchor 3 ("Names domain and 1-2 concrete actions, but not comprehensive") better than anchor 4, which expects several specific actions listed; it is above anchor 2 because the action is specific, not generic.

Completeness

Both what ("Conecta campanhas, eventos e receita em um ciclo mensuravel") and when ("Trigger em: ..." with an explicit concrete trigger list) are present, and the 'when' is highly explicit. Not anchor 5 because the 'what' is a single summary sentence that omits the skill's concrete deliverables, making it less comprehensive than anchor 5's example; not anchor 3 because the 'when' is explicit, not weakly implied.

Trigger Term Quality

The trigger list is comprehensive with 21 natural terms users would actually say, including complaint phrases ("analytics nao bate", "receita nao bate", "duplicou conversao", "lead nao vira venda"), technical identifiers ("GCLID", "transaction"-adjacent terms like "conversao offline"), and PT/EN synonyms ("measurement plan"/"plano de medicao", "break-even ROAS"/"ROAS de equilibrio"). This matches anchor 5's comprehensive coverage including synonyms; anchor 4's "a few natural terms missing" understates the coverage.

Distinctiveness Conflict Risk

Most triggers ("GCLID", "conversao offline", "closed loop", "reconciliacao", "break-even ROAS") carve a clear niche in click-to-revenue measurement. Minor overlap risk remains with closely related skills: "smart bidding"/"target ROAS"/"value-based bidding" could belong to a campaign-management skill, and "consent mode" to a privacy skill — matching anchor 4 ("Mostly distinct; minor overlap risk") rather than anchor 5's minimal conflict risk.