Conciseness

The body is dense with non-obvious SDK/backend facts ('a later recovery, during grace or hold, sends RENEWAL', 'You do not decode RTDNs') and assumes competence throughout. Minor trimmable instances keep it from 5: the intro sentence ('grace period (user keeps access while Google retries the card)...') duplicates the table's Access column, and 'This is the default:' restates the preceding sentence and code. Clearly above the some-unnecessary-explanation anchor at 3.

Actionability

Fully executable copy-paste Kotlin for every variant: the default builder with showInAppMessagesAutomatically(true), the manual trigger pairing, the four-branch when block on billingIssueDetectedAt/isActive, and Purchases.sharedInstance.showManageSubscriptions(activity) with its SDK version. The examples cover the common cases and even encode the subtle account-hold/expired ambiguity. No gaps; matches the top anchor.

Workflow Clarity

Clear phase sequence (Understand → Plan → Execute → Verify) with an explicit validation checklist: each transition has a concrete expected outcome ('Confirm billingIssueDetectedAt becomes non null and isActive stays true', 'confirm a BILLING_ISSUE webhook fires on the first transition'). Phase 2's decision questions with 'If you only want the default behavior, stop here' provide conditional guidance. This matches the explicit-validation-with-checklists anchor, above the minor-gaps anchor at 4.

Progressive Disclosure

No bundle files exist, so the skill is judged on its own structure: well-organized sections (state table, plan questions, three execution variants, verify checklist) with nothing bulk inlined that belongs in a separate file. The single reference ('Full chapter' link) is one level deep and clearly signaled, and navigation is trivial. All content earns its place inline; matches the easy-navigation anchor.

Specificity

Lists several concrete capabilities — 'how Grace Period and Account Hold are reflected in CustomerInfo automatically', 'when to prompt the user', and 'how to trigger Google's in app messaging via showInAppMessages' — with only minor coverage gaps (backend BILLING_ISSUE webhook handling and the fix-payment flow from the body are absent). Not 5 because coverage is not fully comprehensive; not 3 because it goes well beyond 1-2 generic actions.

Completeness

Explicitly answers both parts: 'Use this skill when handling failed renewals on Android with RevenueCat' gives a concrete when-clause, and 'Covers how Grace Period and Account Hold are reflected in CustomerInfo... when to prompt the user, and how to trigger Google's in app messaging' gives a clear what. Both are concrete, matching the top anchor rather than the 4 anchor where 'when' is only adequately specific.

Trigger Term Quality

Good natural keyword coverage: 'failed renewals', 'Grace Period', 'Account Hold', 'Android', 'RevenueCat' are phrases a user would naturally say. Missing common variations like 'billing issue', 'payment failure', or 'subscription recovery', so it falls short of the comprehensive-synonyms anchor at 5, but is clearly above the missing-variations-midpoint at 3.

Distinctiveness Conflict Risk

Clear niche (RevenueCat + Android + failed renewals) with distinct triggers like Grace Period and Account Hold; minimal overlap risk with any other plausible skill. Matches the clear-niche anchor; nothing pushes it toward the minor-overlap anchor at 4.