Conciseness

The body is dense and efficient — decision rules, lookup tables, and executable Kotlin with almost no padding or explanation of concepts Claude already knows. It is not anchor 5 because the Google eight-states table and the "Messaging guide by signal" table partially restate what the decision rules already encode, and could be tightened.

Actionability

Fully executable, copy-paste-ready Kotlin covering the common cases: `awaitCustomerInfo()`, `fetchPolicy = CacheFetchPolicy.FETCH_CURRENT`, a complete `updateUI()` function, `awaitLogIn()`, and `UpdatedCustomerInfoListener` registration. Matches the top anchor with specific examples spanning read, refresh, UI, and verification paths.

Workflow Clarity

A clear Discover → Plan → Execute → Verify sequence is present, and the Verify phase provides explicit validation checkpoints: an eight-case test matrix with expected `isActive` values and UI outcomes, plus a four-item sanity-check list. Not anchor 4, because validation is explicit and enumerated rather than implicit.

Progressive Disclosure

The skill has well-organized phase-based sections and a single clearly signaled, one-level-deep reference (the external "Full chapter" link under References); no bundle files exist, so nothing is nested or buried. It is not anchor 5 because at ~157 inline lines, reference-worthy material such as the Google states table and messaging guide is kept inline rather than split into a separate file.

Specificity

The description lists multiple concrete actions — "reading CustomerInfo, checking entitlement.isActive as the single source of truth for access, and drilling into willRenew, periodType, and expirationDate" — which comprehensively covers the subscription-state gating domain. It exceeds anchor 4 because there are no minor gaps in capability coverage for this niche.

Completeness

It explicitly answers both questions: "Use this skill when gating access based on RevenueCat subscription state on Android" gives a concrete trigger, and the capability list gives a clear 'what'. Not anchor 4, because the 'when' clause is explicit and specific rather than merely present.

Trigger Term Quality

Good natural keyword coverage: "gating access", "subscription state", "RevenueCat", "entitlement", "isActive", "Android" — phrases a developer working with this SDK would actually say. It falls short of anchor 5 because common variations like "paywall", "premium", "cancelled", or "trial" are missing.

Distinctiveness Conflict Risk

The RevenueCat-entitlement-on-Android niche is clearly distinct from generic subscription or billing skills, with dedicated triggers like "entitlement.isActive" and "RevenueCat". It is not anchor 5 because there is minor overlap risk with closely related RevenueCat sibling skills (the body itself references a companion rc-payment-recovery skill).