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progressive-web-app

Progressive Web Apps with service workers, web manifest, offline support, installation prompts. Use for installable web apps, offline functionality, push notifications, or encountering service worker registration, cache strategy, manifest configuration errors.

92

1.00x
Quality

87%

Does it follow best practices?

Impact

100%

1.00x

Average score across 3 eval scenarios

SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

87%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.

An efficient, actionable reference for PWA building blocks with excellent code examples and structure. Its main gap is the absence of an ordered build workflow with a verification checkpoint.

Suggestions

Add a short numbered build sequence (manifest -> register service worker -> handle install prompt -> verify) so the components become an ordered workflow rather than parallel sections.

Include an explicit validation step such as running Lighthouse or navigating the app offline to confirm the service worker and manifest are correctly wired.

Replace undefined helpers (showInstallButton, sendSubscriptionToServer, VAPID_PUBLIC_KEY) with minimal concrete implementations or inline comments noting where they come from.

DimensionReasoningScore

Conciseness

Lean and token-efficient: a one-line framing followed by executable code blocks and a checklist, with no padding explaining what a PWA is or how the APIs work.

5 / 5

Actionability

Provides copy-paste-ready manifest JSON, a complete cache-first service worker, an install-prompt handler, and a push subscription example covering the common PWA cases.

5 / 5

Workflow Clarity

Content is organized as parallel component sections plus a static checklist rather than a sequenced build process, and lacks any validation/verification checkpoint such as a Lighthouse audit.

3 / 5

Progressive Disclosure

Self-contained with no bundle files and clean section headers (Manifest, Service Worker, Install Prompt, Push, Checklist) at a single level of depth, so navigation is trivial.

5 / 5

Total

18

/

20

Passed

Description

87%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.

A strong, well-structured description that explicitly covers both capabilities and use-when triggers with natural terminology. Minor room to convert capability nouns into action verbs and add file-extension triggers.

DimensionReasoningScore

Specificity

Lists several concrete capabilities ('service workers, web manifest, offline support, installation prompts', push notifications) with broad coverage, though phrased as domain components rather than action verbs like the score-5 example.

4 / 5

Completeness

Clearly states both what ('Progressive Web Apps with service workers, web manifest, offline support, installation prompts') and when ('Use for installable web apps... or encountering service worker registration, cache strategy, manifest configuration errors') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Natural developer terms ('installable web apps', 'offline functionality', 'push notifications', 'service worker registration', 'cache strategy') give good coverage, but no file extensions or synonyms like manifest.json/service-worker.js that would push it to 5.

4 / 5

Distinctiveness Conflict Risk

PWA is a clear niche with distinct triggers (service workers, web manifest, installable web apps, push notifications) and minimal overlap risk with other skills.

5 / 5

Total

18

/

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
secondsky/claude-skills
Reviewed

Table of Contents

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