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pwa-expert▌

erichowens/some_claude_skills · updated May 27, 2026

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$npx skills add https://github.com/erichowens/some_claude_skills --skill pwa-expert
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summary

Build installable, offline-capable web apps with Service Workers, smart caching, and native-like experiences.

skill.md

Progressive Web App Expert

Build installable, offline-capable web apps with Service Workers, smart caching, and native-like experiences.

When to Use This Skill

  • Making a web app installable on mobile/desktop
  • Implementing offline functionality
  • Setting up Service Worker caching strategies
  • Handling install prompts (beforeinstallprompt)
  • Background sync for offline-first apps
  • Managing PWA update flows
  • Creating web app manifests

When NOT to Use This Skill

  • Native app development → Use React Native, Flutter, or native SDKs
  • General web performance → Use Lighthouse/performance auditing tools
  • Server-side rendering issues → Use Next.js/framework-specific docs
  • Push notifications only → Consider dedicated push notification services
  • Simple static sites → PWA overhead may not be worth it

Core Concepts

What Makes a PWA Installable

  1. HTTPS (or localhost for dev)
  2. Web App Manifest with required fields
  3. Service Worker with fetch handler
  4. Icons (192×192 and 512×512 minimum)

The PWA Stack

┌─────────────────────────────────────────┐
│           Your App (React/Next.js)      │
├─────────────────────────────────────────┤
│         Service Worker (sw.js)          │
│  ┌─────────────┐  ┌─────────────────┐   │
│  │   Cache     │  │  Network Fetch  │   │
│  │   Storage   │  │    Handling     │   │
│  └─────────────┘  └─────────────────┘   │
├─────────────────────────────────────────┤
│          manifest.json                  │
│  (App identity, icons, display mode)    │
└─────────────────────────────────────────┘

Web App Manifest

Complete manifest.json

{
  "name": "Junkie Buds 4 Life",
  "short_name": "JB4L",
  "description": "Recovery support app",
  "start_url": "/",
  "scope": "/",
  "display": "standalone",
  "orientation": "portrait-primary",
  "background_color": "#1a1410",
  "theme_color": "#1a1410",
  "icons": [
    {
      "src": "/icons/icon-192.png",
      "sizes": "192x192",
      "type": "image/png",
      "purpose": "any"
    },
    {
      "src": "/icons/icon-512.png",
      "sizes": "512x512",
      "type": "image/png",
      "purpose": "any"
    },
    {
      "src": "/icons/icon-maskable-512.png",
      "sizes": "512x512",
      "type": "image/png",
      "purpose": "maskable"
    }
  ],
  "shortcuts": [
    {
      "name": "Find Meetings",
      "short_name": "Meetings",
      "url": "/meetings?source=shortcut",
      "icons": [{ "src": "/icons/meetings-96.png", "sizes": "96x96" }]
    }
  ]
}

Display Modes

Mode Description
fullscreen No browser UI, full screen
standalone App-like, no URL bar (recommended)
minimal-ui Some browser controls
browser Normal browser tab

Link in HTML

<head>
  <link rel="manifest" href="/manifest.json" />
  <meta name="theme-color" content="#1a1410" />
  <meta name="apple-mobile-web-app-capable" content="yes" />
  <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
  <link rel="apple-touch-icon" href="/icons/apple-touch-icon.png" />
</head>

Service Worker Basics

Registration

// lib/pwa.ts
export async function registerServiceWorker() {
  if ('serviceWorker' in navigator) {
    try {
      const registration = await navigator.serviceWorker.register('/sw.js', {
        scope: '/',
      });
      return registration;
    } catch (error) {
      console.error('SW registration failed:', error);
    }
  }
}

// Call on app mount
useEffect(() => {
  registerServiceWorker();
}, []);

Basic Service Worker Structure

// public/sw.js
const CACHE_NAME = 'myapp-v1';
const STATIC_ASSETS = ['/', '/offline', '/manifest.json'];

// Install: Cache static assets
self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME).then((cache) => cache.addAll(STATIC_ASSETS))
  );
  self.skipWaiting();
});

// Activate: Clean old caches
self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then((keys) =>
      Promise.all(keys.filter((k) => k !== CACHE_NAME).map((k) => caches.delete(k)))
    )
  );
  self.clients.claim();
});

// Fetch: Handle requests (see references for strategies)
self.addEventListener('fetch', (event) 
how to use pwa-expert
How to use pwa-expert on Cursor
AI-first code editor with Composer
1
Prerequisites
Before installing skills in Cursor, ensure your development environment meets these requirements:
  • ›Cursor installed and configured on your development machine
  • ›Node.js version 16.0+ with npm package manager (verify with node --version)
  • ›Active project directory or workspace where you want to add pwa-expert
2
Execute installation command
Execute the skills CLI command in your project's root directory to begin installation:
$npx skills add https://github.com/erichowens/some_claude_skills --skill pwa-expert
The skills CLI fetches pwa-expert from GitHub repository erichowens/some_claude_skills and configures it for Cursor.
3
Select Cursor when prompted
The CLI will show a list of available agents. Use arrow keys to navigate and space to select Cursor:
◆ Which agents do you want to install to?
│
│ ── Universal (.agents/skills) ── always included ────
│   • Amp
│   • Antigravity
│   • Cline
│   • Codex
│ ●Cursor(selected)
│   • Cursor
│   • Windsurf
4
Verify installation
Confirm successful installation by checking the skill directory location:
.cursor/skills/pwa-expert
Reload or restart Cursor to activate pwa-expert. Access the skill through slash commands (e.g., /pwa-expert) or your agent's skill management interface.
⚠
Security & Verification Notice
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
Skills execute code in your development environment. Always verify the publisher's identity, review recent commits, and test in isolated environments before production deployment.
Additional Resources
›View source code on GitHub›Skills CLI documentation›Learn more about Cursor›What are agent skills?

List & Monetize Your Skill

Submit your Claude Code skill and start earning

GET_STARTED →

Use Cases▌

User Story & Requirements Generation

Create detailed user stories, acceptance criteria, and feature specs

Example

Generate user stories for 'password reset feature' with acceptance criteria, edge cases, and test scenarios

✓

Reduce spec writing time by 50%, ensure comprehensive coverage

Competitive Analysis

Research competitors, compare features, identify gaps

Example

Analyze 5 competitor products, create feature comparison matrix, suggest differentiation opportunities

✓

Complete competitive research in 2 hours instead of 2 days

Roadmap Prioritization

Evaluate features using frameworks (RICE, ICE, Kano) and create prioritized backlogs

Example

Score 20 feature ideas using RICE framework, generate prioritized roadmap with rationale

✓

Make data-driven prioritization decisions faster

Stakeholder Communication

Draft PRDs, status updates, and stakeholder presentations

Example

Create executive summary of Q3 roadmap, monthly progress report, feature launch announcement

✓

Save 3-5 hours/week on communication overhead

Implementation Guide▌

Prerequisites

  • ›Claude Desktop or compatible AI client
  • ›Access to product documentation and roadmap tools (Jira, Notion, etc.)
  • ›Understanding of product management frameworks (RICE, Jobs-to-be-Done, etc.)
  • ›Stakeholder contact information and communication channels

Time Estimate

30-60 minutes to see productivity improvements

Installation Steps

  1. 1.Install product management skill
  2. 2.Start with user story generation for known feature
  3. 3.Progress to competitive analysis: research 2-3 competitors
  4. 4.Use for roadmap prioritization: apply RICE/ICE scoring
  5. 5.Draft stakeholder communications and refine based on feedback
  6. 6.Build template library for recurring PM tasks
  7. 7.Share effective prompts with product team

Common Pitfalls

  • ⚠Not validating competitive research—verify facts before sharing
  • ⚠Accepting user stories without involving engineering team
  • ⚠Over-relying on frameworks without qualitative judgment
  • ⚠Not customizing outputs to company culture and communication style
  • ⚠Skipping stakeholder validation of generated requirements

Best Practices▌

✓ Do

  • +Validate research and competitive analysis with real data
  • +Collaborate with engineering when generating technical requirements
  • +Customize frameworks and templates to your company context
  • +Use skill for first drafts, refine with stakeholder input
  • +Document successful prompt patterns for PM tasks
  • +Combine AI efficiency with human judgment and intuition

✗ Don't

  • −Don't publish competitive analysis without fact-checking
  • −Don't finalize user stories without engineering review
  • −Don't make prioritization decisions solely on AI scoring
  • −Don't skip customer validation of generated requirements
  • −Don't ignore company-specific context and culture

💡 Pro Tips

  • ★Provide context: company goals, constraints, customer feedback
  • ★Ask for alternatives: 'Show 3 ways to prioritize this roadmap'
  • ★Request stakeholder-specific formatting: 'Executive summary vs. engineering spec'
  • ★Use skill for 70% generation + 30% customization to company needs

When to Use This▌

✓ Use When

Use for user story writing, competitive research, roadmap prioritization, stakeholder communication, and PRD drafting. Best for reducing repetitive documentation and research work.

✗ Avoid When

Avoid for strategic product vision (requires deep customer empathy), pricing decisions (needs market and financial expertise), or when face-to-face customer discovery is more valuable than speed.

Learning Path▌

  1. 1Basic: user stories, feature specs, status updates
  2. 2Intermediate: competitive analysis, prioritization frameworks, PRDs
  3. 3Advanced: product strategy, go-to-market planning, OKR setting
  4. 4Expert: product vision, market positioning, business model innovation

Discussion

Product Hunt–style comments (not star reviews)
  • No comments yet — start the thread.
general reviews

Ratings

4.7★★★★★63 reviews
  • ★★★★★Hana Mensah· Dec 24, 2024

    pwa-expert has been reliable in day-to-day use. Documentation quality is above average for community skills.

  • ★★★★★Sofia Jain· Dec 20, 2024

    Registry listing for pwa-expert matched our evaluation — installs cleanly and behaves as described in the markdown.

  • ★★★★★Shikha Mishra· Dec 12, 2024

    Useful defaults in pwa-expert — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.

  • ★★★★★Harper Yang· Dec 12, 2024

    We added pwa-expert from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • ★★★★★Soo Smith· Dec 8, 2024

    pwa-expert fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

  • ★★★★★Noor Mehta· Dec 4, 2024

    pwa-expert reduced setup friction for our internal harness; good balance of opinion and flexibility.

  • ★★★★★Sakshi Patil· Nov 27, 2024

    Registry listing for pwa-expert matched our evaluation — installs cleanly and behaves as described in the markdown.

  • ★★★★★Hassan Desai· Nov 27, 2024

    pwa-expert is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.

  • ★★★★★Harper Rao· Nov 19, 2024

    pwa-expert reduced setup friction for our internal harness; good balance of opinion and flexibility.

  • ★★★★★Hana Johnson· Nov 15, 2024

    Useful defaults in pwa-expert — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.

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