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Kodelyth ECC
Skill

seo

Audit, plan, and implement SEO improvements across technical SEO, on-page optimization, structured data, Core Web Vitals, and content strategy. Use when the user wants better search visibility, SEO remediation, schema markup, sitemap/robots work, or keyword mapping.

Invoke via:use seo
Origin:ECC

SEO

Improve search visibility through technical correctness, performance, and content relevance, not gimmicks.

When to Use

Use this skill when:

  • auditing crawlability, indexability, canonicals, or redirects
  • improving title tags, meta descriptions, and heading structure
  • adding or validating structured data
  • improving Core Web Vitals
  • doing keyword research and mapping keywords to URLs
  • planning internal linking or sitemap / robots changes

How It Works

Principles

  • Fix technical blockers before content optimization.
  • One page should have one clear primary search intent.
  • Prefer long-term quality signals over manipulative patterns.
  • Mobile-first assumptions matter because indexing is mobile-first.
  • Recommendations should be page-specific and implementable.

Technical SEO checklist

#### Crawlability

  • robots.txt should allow important pages and block low-value surfaces
  • no important page should be unintentionally noindex
  • important pages should be reachable within a shallow click depth
  • avoid redirect chains longer than two hops
  • canonical tags should be self-consistent and non-looping
#### Indexability

  • preferred URL format should be consistent
  • multilingual pages need correct hreflang if used
  • sitemaps should reflect the intended public surface
  • no duplicate URLs should compete without canonical control
#### Performance

  • LCP < 2.5s
  • INP < 200ms
  • CLS < 0.1
  • common fixes: preload hero assets, reduce render-blocking work, reserve layout space, trim heavy JS
#### Structured data

  • homepage: organization or business schema where appropriate
  • editorial pages: Article / BlogPosting
  • product pages: Product and Offer
  • interior pages: BreadcrumbList
  • Q&A sections: FAQPage only when the content truly matches

On-page rules

#### Title tags

  • aim for roughly 50-60 characters
  • put the primary keyword or concept near the front
  • make the title legible to humans, not stuffed for bots
#### Meta descriptions

  • aim for roughly 120-160 characters
  • describe the page honestly
  • include the main topic naturally
#### Heading structure

  • one clear H1
  • H2 and H3 should reflect actual content hierarchy
  • do not skip structure just for visual styling

Keyword mapping

  • define the search intent
  • gather realistic keyword variants
  • prioritize by intent match, likely value, and competition
  • map one primary keyword/theme to one URL
  • detect and avoid cannibalization

Internal linking

  • link from strong pages to pages you want to rank
  • use descriptive anchor text
  • avoid generic anchors when a more specific one is possible
  • backfill links from new pages to relevant existing ones

Examples

Title formula

Primary Topic - Specific Modifier | Brand

Meta description formula

Action + topic + value proposition + one supporting detail

JSON-LD example

{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Page Title Here",
  "author": {
    "@type": "Person",
    "name": "Author Name"
  },
  "publisher": {
    "@type": "Organization",
    "name": "Brand Name"
  }
}

Audit output shape

[HIGH] Duplicate title tags on product pages
Location: src/routes/products/[slug].tsx
Issue: Dynamic titles collapse to the same default string, which weakens relevance and creates duplicate signals.
Fix: Generate a unique title per product using the product name and primary category.

Anti-Patterns

| Anti-pattern | Fix | | --- | --- | | keyword stuffing | write for users first | | thin near-duplicate pages | consolidate or differentiate them | | schema for content that is not actually present | match schema to reality | | content advice without checking the actual page | read the real page first | | generic “improve SEO” outputs | tie every recommendation to a page or asset |

Related Skills

  • seo-specialist
  • frontend-patterns
  • brand-voice
  • market-research