Conciseness

Mostly efficient Stripe-specific guidance, but it includes explanation Claude already knows, e.g. a semantic versioning primer ("MAJOR: Breaking API changes, MINOR: New functionality (backward-compatible), PATCH: Bug fixes") and a generic backward-compatible/breaking-changes taxonomy. It handles time-sensitive version numbers well (the fallback is labeled a dated snapshot with staleness guidance and instructions to substitute the target), which keeps it above 2, but the padding keeps it below 4.

Actionability

Concrete, copy-paste-ready guidance dominates: executable Python/Ruby/JS client-config and per-request-override snippets, a curl command with the Stripe-Version test header, "npm install @stripe/stripe-js", and checklist commands like "npm update stripe, pip install --upgrade stripe". Minor gaps keep it from 5: the strongly-typed path says only "update the SDK to target a new API version" with no command, and the "Migrating from v3" steps are abstract ("Consider gradually updating your API version").

Workflow Clarity

The 9-step Upgrade Checklist gives a clear sequence with real checkpoints: test via Stripe-Version before committing, create and test a replacement destination, accept both signing secrets during testing and cutover, disable the old destination after cutover, and a 72-hour rollback window. It is not 5 because there is no explicit error-recovery feedback loop (what to do when tests or the new destination fail) — only the success-path checkpoints — matching 'clear sequence with most checkpoints present; minor validation gaps'.

Progressive Disclosure

No bundle files exist, and each major section clearly signals the authoritative external reference for detail ("See [Set a Stripe API version for your SDK](https://docs.stripe.com/sdks/set-version.md) for details", plus versioning, webhook-versioning, changelog, and upgrades links), keeping the body an overview rather than a full reference. Good structure with minor gaps: some inline content (the semver primer, the Types of Changes lists) could be trimmed or externalized, fitting 'good structure; most content appropriately placed; references mostly clear'.

Specificity

The description enumerates concrete components it covers — "upgrading Stripe API versions, webhook endpoints, server-side SDKs, Stripe.js, and mobile SDKs" — giving specific scope with only minor gaps. It falls short of 5 because the action side is a single generic verb ("Guide for upgrading") rather than multiple distinct concrete actions, and above 3 because it lists five specific coverage areas rather than 1-2.

Completeness

The 'what' is clear (a guide for upgrading the enumerated Stripe components), but there is no 'Use when...' clause or equivalent explicit trigger guidance, which caps completeness at 3 per the judging guidelines. It is not 2 because the 'what' is concrete and specific, not vague.

Trigger Term Quality

Relevant keywords are present ("upgrading", "Stripe API versions", "SDKs", "Stripe.js") that a user needing this skill would plausibly say. It misses common variations and synonyms such as "update", "migrate", "version pin", or "API version bump", keeping it at the 'some relevant keywords but missing variations' anchor rather than 4.

Distinctiveness Conflict Risk

"Upgrading Stripe API versions, webhook endpoints, server-side SDKs, Stripe.js, and mobile SDKs" is a clear niche with minimal generic overlap. It is not 5 because, lacking explicit trigger phrases, its boundary against a broader Stripe-integration or general dependency-upgrade skill is implicit rather than sharply drawn — matching 'mostly distinct; minor overlap risk with closely related skills'.