.agents/skills/seo-fundamentals/SKILL.md
SEO fundamentals, E-E-A-T, Core Web Vitals, and Google algorithm principles.
npx skillsauth add edpachecojr/sentinel seo-fundamentalsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Principles for search engine visibility.
| Principle | Signals | |-----------|---------| | Experience | First-hand knowledge, real examples | | Expertise | Credentials, depth of knowledge | | Authoritativeness | Backlinks, mentions, industry recognition | | Trustworthiness | HTTPS, transparency, accurate info |
| Metric | Target | Measures | |--------|--------|----------| | LCP | < 2.5s | Loading performance | | INP | < 200ms | Interactivity | | CLS | < 0.1 | Visual stability |
| Element | Purpose | |---------|---------| | XML sitemap | Help crawling | | robots.txt | Control access | | Canonical tags | Prevent duplicates | | HTTPS | Security signal |
| Factor | Impact | |--------|--------| | Page speed | Core Web Vital | | Mobile-friendly | Ranking factor | | Clean URLs | Crawlability |
| Element | Best Practice | |---------|---------------| | Title tag | 50-60 chars, keyword front | | Meta description | 150-160 chars, compelling | | H1 | One per page, main keyword | | H2-H6 | Logical hierarchy | | Alt text | Descriptive, not stuffed |
| Factor | Importance | |--------|------------| | Depth | Comprehensive coverage | | Freshness | Regular updates | | Uniqueness | Original value | | Readability | Clear writing |
| Type | Use | |------|-----| | Article | Blog posts, news | | Organization | Company info | | Person | Author profiles | | FAQPage | Q&A content | | Product | E-commerce | | Review | Ratings | | BreadcrumbList | Navigation |
| ✅ Do | ❌ Don't | |-------|----------| | AI draft + human edit | Publish raw AI content | | Add original insights | Copy without value | | Expert review | Skip fact-checking | | Follow E-E-A-T | Keyword stuffing |
| Priority | Factor | |----------|--------| | 1 | Quality, relevant content | | 2 | Backlinks from authority sites | | 3 | Page experience (Core Web Vitals) | | 4 | Mobile optimization | | 5 | Technical SEO fundamentals |
| Metric | Tool | |--------|------| | Rankings | Search Console, Ahrefs | | Traffic | Analytics | | Core Web Vitals | PageSpeed Insights | | Indexing | Search Console | | Backlinks | Ahrefs, Semrush |
Remember: SEO is a long-term game. Quality content + technical excellence + patience = results.
development
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
tools
UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 9 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, mobile app, .html, .tsx, .vue, .svelte. Elements: button, modal, navbar, sidebar, card, table, form, chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, flat design. Topics: color palette, accessibility, animation, layout, typography, font pairing, spacing, hover, shadow, gradient. Integrations: shadcn/ui MCP for component search and examples.
tools
Configure TOTP authenticator apps, send OTP codes via email/SMS, manage backup codes, handle trusted devices, and implement 2FA sign-in flows using Better Auth's twoFactor plugin. Use when users need MFA, multi-factor authentication, authenticator setup, or login security with Better Auth.
testing
Testing patterns and principles. Unit, integration, mocking strategies.