Conciseness

The body is dense and imperative with no explanations of concepts Claude already knows — nearly every token earns its place. It is not a 5 because time-sensitive information sits inline rather than in a deprecation/old-patterns section ("If it 404s (the state on 2026-10-18)" and many pinned versions like "pdfjs-dist@^6.4.299"), and a few long parentheticals could be trimmed.

Actionability

Fully executable throughout: exact commands ("curl -fsSL --create-dirs -o <dest> <url>"), exact registry and tarball URLs, an exact CSS line to add ("@custom-variant dark (&:where(.dark, .dark *));"), a complete runnable Svelte example, and per-component required-props lists. This matches the copy-paste-ready top anchor.

Workflow Clarity

Nine clearly sequenced steps with explicit validation checkpoints and feedback loops: name validation with a stop condition ("If the name is empty or still not in the list, print the valid names and stop"), an import-resolution grep check, and step 8's type check plus dev-server render verification with "Fix errors in what you wrote". Conditional branching (registry-first, manual copy fallback) is handled explicitly.

Progressive Disclosure

Good structure: numbered step headings and clearly signaled references to the hub skill's "references/installation.md" and "references/dark-mode-and-theming.md" (this bundle has no files of its own). Minor gap: reference-worthy material is inlined in the body — the engine npm closure list, the alias table, and the per-component props list could each live in a reference file to keep the overview leaner.

Specificity

"Install one extend-ui-svelte component into the current Svelte 5 project, with its engine dependencies, SSR-safe setup, and a minimal usage example" names the domain and several concrete actions (install, engine dependencies, SSR-safe setup, usage example). It falls short of the 5 anchor because coverage has minor gaps (e.g., no mention of the npm vs copy-in install paths or verification), but exceeds the 3 anchor's 1-2 actions.

Completeness

The "what" is clear (install a component with engine dependencies, SSR-safe setup, and a usage example), and the "when" is present as explicit trigger guidance via "Invoked as /extend-ui-svelte:add-component <component-name>" — this avoids the missing-trigger cap of 3. It does not reach 5 because the invocation sentence is mechanical rather than natural-language "Use when..." trigger phrases.

Trigger Term Quality

Includes good keywords users would say for this need: "Install", "component", the library name "extend-ui-svelte", "Svelte 5", and the explicit invocation "/extend-ui-svelte:add-component". A few natural terms/synonyms are missing (e.g., "add component", "svelte component library"), so it does not reach the 5 anchor's comprehensive synonym coverage.

Distinctiveness Conflict Risk

It names a specific niche library ("extend-ui-svelte") and framework ("Svelte 5 project") plus a unique slash-command invocation, giving it a clear niche with distinct triggers and minimal conflict risk with other skills.