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wxt

WXT browser extension patterns for entrypoints, background service workers, content scripts, side panels, storage, permissions, host permissions, browser compatibility, and build commands. Use when editing apps/tab-manager, wxt.config.ts, src/entrypoints, extension manifests, or @wxt-dev/storage usage.

76

Quality

93%

Does it follow best practices?

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SKILL.md
Quality
Evals
Security

Quality

Content

87%

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

A concise, highly actionable reference of WXT patterns with well-organized sections and a grounding/verification loop. The main gap is workflow clarity: the build and command operations are listed as rules rather than a sequenced workflow with explicit validation checkpoints.

Suggestions

Add a short sequenced build workflow with a validation checkpoint (e.g., run `wxt prepare`, inspect generated manifest/.wxt output, then `wxt build`/`wxt zip`), so destructive or batch build operations have an explicit feedback loop.

Include one minimal executable entrypoint snippet (e.g., a `defineBackground`/`defineSidePanel` main function showing non-async kickoff) to make the "don't make background main async" rule copy-paste ready.

Surface the `wxt.config.ts` permission/host_permission declarations as a concrete example block so the storage and host-permission rules become directly actionable.

DimensionReasoningScore

Conciseness

Lean, rule-dense body with no padding or explanation of concepts Claude already knows (e.g., what WXT or a service worker is); every line earns its place, matching the score-3 anchor.

3 / 3

Actionability

Concrete named APIs (defineBackground, defineContentScript, @wxt-dev/storage) and copy-paste-ready commands ("wxt prepare, wxt build, wxt zip", "-b firefox") give executable guidance; per the instruction-only scoring note, absence of code blocks is not penalized when guidance is this actionable.

3 / 3

Workflow Clarity

Guidance is organized into clear sections and the Upstream Grounding step pairs an action with a verification step ("Verify decisive details against local wxt.config.ts and generated output"), but the build/command flow lacks explicit validation checkpoints for a risky or batch operation, capping at 2 rather than 3.

2 / 3

Progressive Disclosure

Under 50 lines with no bundle files and well-organized sections (Entrypoints, Manifest/Storage/Commands, Upstream Grounding); per the rubric, such a simple skill can score 3 on progressive disclosure with just well-organized sections.

3 / 3

Total

11

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12

Passed

Description

100%

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

A strong, third-person description that names concrete capabilities and pairs them with an explicit, file-path-anchored "Use when" trigger. It is specific, complete, and clearly distinguished from other skills.

DimensionReasoningScore

Specificity

Lists many specific concrete capabilities/patterns — "entrypoints, background service workers, content scripts, side panels, storage, permissions, host permissions, browser compatibility, and build commands" — matching the score-3 anchor of multiple concrete actions.

3 / 3

Completeness

Explicitly states what ("WXT browser extension patterns for...") and when via an explicit "Use when editing apps/tab-manager, wxt.config.ts, src/entrypoints, extension manifests, or @wxt-dev/storage usage" clause, matching the score-3 anchor.

3 / 3

Trigger Term Quality

Natural trigger terms a user in this repo would say ("browser extension", "WXT", "wxt.config.ts", "src/entrypoints", "extension manifests", "@wxt-dev/storage") give good coverage; not score 2 because common variations are present rather than missing.

3 / 3

Distinctiveness Conflict Risk

Tightly scoped to WXT and the tab-manager app with distinct file-path triggers, making it unlikely to fire for unrelated skills.

3 / 3

Total

12

/

12

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

Table of Contents

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