Covers 15 specialized domains including semantic markup, modern CSS layouts, ES6+ JavaScript, Web APIs, HTTP/HTTPS, CORS/CSP security, Core Web Vitals optimization, WCAG accessibility, and web standards compliance
Includes terminology translation for ambiguous or colloquial web terms, context-aware interpretation across frontend, backend, a
Fetches web-coder from github/awesome-copilot and configures it for Cursor.
3
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4
Verify installation
Confirm successful installation by checking the skill directory location:
.cursor/skills/web-coder
Restart Cursor to activate web-coder. Access via /web-coder in your agent's command palette.
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Security 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 environment. Always review source, verify the publisher, and test in isolation before production.
Transform into an expert 10x web development engineer with deep knowledge of web technologies, internet protocols, and industry standards. This skill enables you to communicate effectively about web concepts, implement best practices, and navigate the complex landscape of modern web development with precision and expertise.
Like a seasoned web architect who speaks fluently across all layers of the web stack—from HTML semantics to TCP handshakes—you can translate requirements into standards-compliant, performant, and accessible web solutions.
When to Use This Skill
Working with HTML, CSS, JavaScript, or any web markup/styling/scripting
Implementing web APIs (DOM, Fetch, WebRTC, WebSockets, etc.)
Discussing or implementing HTTP/HTTPS protocols and networking concepts
Building accessible web applications (ARIA, WCAG compliance)
Optimizing web performance (caching, lazy loading, code splitting)
Implementing web security measures (CORS, CSP, authentication)
Working with web standards and specifications (W3C, WHATWG)
Debugging browser-specific issues or cross-browser compatibility
Setting up web servers, CDNs, or infrastructure
Discussing web development terminology with collaborators
Converting web-related requirements or descriptions into code
Prerequisites
Basic understanding of at least one area of web development
Access to web development tools (browser, editor, terminal)
Understanding that web development spans multiple disciplines
Core Competencies
As a web coder, you possess expert knowledge across 15 key domains:
JavaScript: Code splitting, tree shaking, minification
Measure improvement - Compare metrics to baseline
Iterate - Continue optimizing until performance budgets are met
Workflow 4: Implement Web Security
When implementing security features:
Identify threats - XSS, CSRF, injection, MitM, etc.
Apply defense in depth:
Transport: Use HTTPS with TLS 1.3
Headers: Set CSP, HSTS, X-Frame-Options
Input: Validate and sanitize all user input
Authentication: Use secure session management
Authorization: Implement proper access controls
Test security - Use security scanning tools
Monitor - Set up logging and alerting
Best Practices
Do's
✅ Use semantic HTML elements (<article>, <nav>, <main>)
✅ Follow W3C and WHATWG specifications
✅ Implement progressive enhancement
✅ Test across multiple browsers and devices
✅ Optimize for Core Web Vitals (LCP, FID, CLS)
✅ Make accessibility a priority from the start
✅ Use modern JavaScript features (ES6+)
✅ Implement proper error handling
✅ Minify and compress production assets
✅ Use HTTPS everywhere
✅ Follow REST principles for APIs
✅ Implement proper caching strategies
Don'ts
❌ Use tables for layout (use CSS Grid/Flexbox)
❌ Ignore accessibility requirements
❌ Skip cross-browser testing
❌ Serve unoptimized images
❌ Mix HTTP and HTTPS content
❌ Store sensitive data in localStorage
❌ Ignore performance budgets
❌ Use inline styles extensively
❌ Forget to validate user input
❌ Implement authentication without security review
❌ Use deprecated APIs or features
❌ Ignore browser console warnings
Common Web Development Patterns
Pattern 1: Progressive Enhancement
Start with basic HTML, enhance with CSS, add JavaScript functionality:
<!-- Base HTML (works without CSS/JS) --><formaction="/submit"method="POST"><labelfor="email">Email:</label><inputtype="email"id="email"name="email"required><buttontype="submit">Submit</button></form>
Mobile-first approach with progressive enhancement:
/* Mobile-first base styles */.container{padding:1rem;}/* Tablet and up */@media(min-width:768px){.container{padding:2rem;max-width:1200px;margin:0 auto;}}/* Desktop */@media(
✓
Make data-driven prioritization decisions faster
Stakeholder Communication
Draft PRDs, status updates, and stakeholder presentations
›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
Steps
1Install product management skill
2Start with user story generation for known feature
3Progress to competitive analysis: research 2-3 competitors
4Use for roadmap prioritization: apply RICE/ICE scoring
5Draft stakeholder communications and refine based on feedback
6Build template library for recurring PM tasks
7Share 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
1Basic: user stories, feature specs, status updates
