Conciseness

The body is lean throughout — "No SDK. Bearer token. Trailing slashes are required." — and never explains concepts Claude already knows; even the docs note ("curl and remote crawlers get 429 or a login form. Use this skill, not a scrape") is actionable guidance rather than padding. This matches the 5 anchor (lean, every token earns its place) and not 4, since there is no over-explanation to trim.

Actionability

Everything is copy-paste executable: the base URL, a full method/path endpoint table, and complete curl commands with auth and Content-Type headers plus JSON bodies for create, search, list, and attach — the shell quoting in the connections example is even correct. This matches the 5 anchor (fully executable, common cases covered) rather than 4, which would require minor gaps that are not present.

Workflow Clarity

The sequence is clear (Auth steps 1–3 → Endpoints → Recipes → Rules) and validation checkpoints exist: "Treat 401 as a bad or missing token. Treat 404 as a missing UUID or a dropped slash", "Confirm before DELETE or bulk create", and cursor-based pagination — so the destructive/batch cap does not apply. It is 4 rather than 5 because the error handling is stated as rules, not wired into an explicit feedback loop (e.g., on 401 fix the token and retry the request).

Progressive Disclosure

Sections are well organized (Auth, Endpoints, Recipes, Rules) with no nested or dead references and no bundle files to mis-route. It scores 4 rather than 5 because the body runs ~82 lines — over the under-50-line exception — with the endpoint table and recipes inlined, so there is a minor split-out opportunity (e.g., a references/endpoints.md); it is not 3 since nothing is buried and the inline size remains compact.

Specificity

The description enumerates concrete, endpoint-backed actions — "save a URL or note", "list or search their Sublime library", "create or update a collection", "favorite a card", "add a note" — in third person, giving comprehensive coverage of the API surface with no generic filler. This matches the 5 anchor (multiple specific concrete actions, comprehensive) rather than 4, whose only distinction is minor coverage gaps that are absent here.

Completeness

It explicitly answers both questions: what ("Call the Sublime.app library REST API") and when ("Use when the user wants to save a URL or note to Sublime, list or search their Sublime library…") with concrete trigger phrases, exactly matching the 5 anchor. It is not 4 because the 'when' clause is already fully explicit rather than needing more specificity.

Trigger Term Quality

Phrases like "save a URL", "search their Sublime library", "favorite a card", and "integrate sublime.app into a script" are natural user utterances, giving good keyword coverage. It falls short of the 5 anchor because common synonyms users might say — e.g. "bookmark", "clip", "save this link" — are not covered.

Distinctiveness Conflict Risk

The skill occupies a clear niche (the sublime.app read-later library) and actively defuses the obvious name collisions with "Not for Sublime Text, Sublime Security email, or generic web search", matching the 5 anchor (clear niche, distinct triggers, minimal conflict risk). It is not 4 because the explicit exclusions remove even the minor overlap risks that anchor admits.