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svelte

Svelte 5 component and state-module patterns for Epicenter apps. Use when editing `.svelte`, `.svelte.ts`, or Svelte UI state code involving runes, `$props`, snippets, keyed lifecycles, `{#await}`, TanStack Query, `SvelteMap`/`SvelteSet`, `createSubscriber`, `$state.raw`, shadcn-svelte, or workspace observers.

75

Quality

93%

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SKILL.md
Quality
Evals
Security

Quality

Content

86%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A well-structured, lean patterns skill that assumes expertise, gives concrete directives with exemplars, and cleanly defers detail to three clearly-signaled reference files. The only gap is the absence of inline executable code snippets, which is acceptable for an instruction-only skill but keeps actionability just below maximum.

Suggestions

Add 1-2 short inline code snippets for the most common decisions (e.g. a `SvelteMap`-backed collection read via `fromWorkspace` + `$derived`) to make the guidance copy-paste ready rather than exemplar-by-path.

Show a minimal before/after for one legacy-to-runes migration (e.g. `export let` + `on:click` → `$props()` + `onclick`) since the 'Avoid legacy patterns' bullet enumerates many APIs without an example.

Tighten the longest Core Decisions bullets (the `$state.raw` and `SvelteSet` entries) into a decision + one-line exemplar so the dense paragraphs scan as quickly as the shorter bullets.

DimensionReasoningScore

Conciseness

Dense, expert-targeted guidance that assumes Claude's competence—no basic explanations of what Svelte/runes are—and every bullet earns its place with high-signal decisions, exemplars, and concrete file paths.

5 / 5

Actionability

Concrete, executable directives with specific function names (e.g. `fromWorkspace`, `createSubscriber`) and file exemplars (`packages/svelte-utils/src/from-workspace.svelte.ts`); as an instruction-only skill it lacks inline code snippets but the guidance is specific and actionable, leaving only minor gaps.

4 / 5

Workflow Clarity

Clear sequencing via Source Checks → Upstream Grounding → Svelte 5 Baseline → Core Decisions → Reference Map, with verification checkpoints (check upstream docs before changing X); not a destructive/batch workflow so no cap applies, but multi-step validation loops are not its primary shape.

4 / 5

Progressive Disclosure

The body is a clear overview with a Reference Map pointing one-level-deep to three real reference files, each explicitly signaled with when-to-read conditions, and all referenced paths verified to exist.

5 / 5

Total

18

/

20

Passed

Description

100%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is exemplary: it states a precise domain, enumerates concrete capabilities, provides explicit 'Use when…' trigger guidance with file extensions and API tokens, and is clearly distinguishable from sibling skills. No fluff or over-claims.

DimensionReasoningScore

Specificity

Names the Svelte 5 component/state-module domain and lists multiple concrete capabilities—runes, `$props`, snippets, keyed lifecycles, `{#await}`, TanStack Query, `SvelteMap`/`SvelteSet`, `createSubscriber`, `$state.raw`, shadcn-svelte—matching the comprehensive-coverage anchor.

5 / 5

Completeness

Explicitly answers both 'what' (Svelte 5 component and state-module patterns for Epicenter apps) and 'when' ("Use when editing .svelte, .svelte.ts, or Svelte UI state code involving…") with concrete trigger phrases.

5 / 5

Trigger Term Quality

Includes the file extensions (`.svelte`, `.svelte.ts`) and the specific API tokens a user's code would actually contain (`$props`, `{#await}`, `SvelteMap`, `createSubscriber`, `$state.raw`, shadcn-svelte), giving comprehensive natural + technical keyword coverage.

5 / 5

Distinctiveness Conflict Risk

Clear niche (Epicenter + Svelte 5) with distinct, specific triggers (named runes/APIs) and minimal overlap with other skills, matching the clear-niche anchor.

5 / 5

Total

20

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
EpicenterHQ/epicenter
Reviewed

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