SEO -- SEO Optimization & Technical Auditing

Activate When

• /godmode:seo, "SEO audit", "meta tags"
• "structured data", "schema markup", "Core Web Vitals"
• "sitemap", "robots.txt", "Open Graph"
• Pre-ship quality gate or search ranking drops

Workflow

Step 1: Technical Discovery

# Check for sitemap and robots.txt
curl -sf https://example.com/sitemap.xml | head -5
curl -sf https://example.com/robots.txt

# Lighthouse SEO audit
npx lighthouse https://example.com \
  --only-categories=seo --output=json

SEO DISCOVERY:
Target: <URL / entire site>
Framework: <Next.js | Nuxt | SvelteKit | static>
Rendering: SSR | SSG | CSR | ISR | hybrid

Step 2: Meta Tag Audit

TITLE: 50-60 chars, unique per page,
  primary keyword near beginning, brand at end
DESCRIPTION: 150-160 chars, unique, has CTA
CANONICAL: every page, self-referencing,
  trailing slash consistent, no canonical to 404

MINIMUM META TAGS PER PAGE:
  <title>, <meta description>, <link canonical>
  OG: og:type, og:title, og:description,
    og:image (1200x630), og:url, og:site_name
  Twitter: twitter:card, twitter:title,
    twitter:description, twitter:image
  JSON-LD structured data

Step 3: Structured Data (JSON-LD)

Page type -> Schema.org type:
  Homepage: Organization (name, url, logo, sameAs)
  Blog posts: Article (headline, author, date)
  Products: Product (name, price, availability)
  FAQ: FAQPage (Question/Answer pairs)
  Breadcrumbs: BreadcrumbList (position, name)
  Search: WebSite + SearchAction

IF structured data present: validate with
  Google Rich Results Test (0 errors required)
IF structured data missing: add for page type
WHEN data doesn't match visible content: fix
  (mismatch = manual penalty risk)

Step 4: Sitemap & Robots.txt

SITEMAP:
  Location: /sitemap.xml, XML format
  Check: missing pages, dead URLs, non-canonical
  Limits: 50MB / 50K URLs -> split
  Reference in robots.txt

ROBOTS.TXT:
  Allow important pages
  Block admin/login/API/internal
  Block duplicate params (?sort=, ?filter=)
  NEVER block CSS/JS (engines need to render)

Step 5: Core Web Vitals

TARGETS: LCP <2.5s, INP <200ms, CLS <0.1

LCP FIXES: preload LCP image, responsive srcset,
  WebP/AVIF, inline critical CSS, reduce TTFB,
  defer non-critical JS, fetchpriority="high"

CLS FIXES: explicit width/height on images/videos,
  aspect-ratio CSS, reserve space for ads/embeds,
  preload fonts, font-display:optional/swap

INP FIXES: break long tasks (>50ms) with yield,
  requestIdleCallback, web workers,
  debounce inputs, minimize DOM (<1500 elements)

Step 6: Open Graph & Social

OG Image: min 1200x630, JPG/PNG <8MB,
  absolute URL, publicly accessible
Test: Facebook Debugger, Twitter Card Validator

Step 7: Monitoring

Track weekly: organic traffic, impressions/clicks,
  keyword rankings, crawl errors
Track per deploy: Lighthouse CI scores
  Assert: performance >=0.9, seo >=0.9,
    LCP <2500, CLS <0.1
Track monthly: CWV field data (CrUX)

Step 8: Report

SEO AUDIT -- {target}:
  Meta: {status} ({N} pages)
  Canonical: {status}, Sitemap: {status}
  CWV: LCP {N}s, INP {N}ms, CLS {N}
  Structured data: {N} types, valid: {yes|no}
  Lighthouse SEO: {N}/100
  Verdict: PASS (>=90) | NEEDS WORK (>=70) | FAIL

Commit: "seo: {target} -- fix {N} issues"

Key Behaviors

1. Crawlability first. Robots, sitemap, canonicals.
2. CWV affects ranking. Google ranking signals.
3. JSON-LD earns rich results. Improves CTR.
4. Meta tags are the sales pitch. Write for humans.
5. Open Graph is not optional.
6. SEO is ongoing. Audit every deploy.
7. Never ask to continue. Loop autonomously.

HARD RULES

1. EVERY page: unique title (50-60 chars) + description.
2. EVERY page: canonical URL. No duplicate content.
3. EVERY image: alt text. Decorative = alt="".
4. NEVER client-render SEO-critical content.
5. Structured data MUST match visible content.
6. AUTO-GENERATE sitemap on deploy.
7. EVERY page: single H1, logical heading hierarchy.
8. CWV targets: LCP <2.5s, INP <200ms, CLS <0.1.

Auto-Detection

grep -r "next-seo\|react-helmet\|vue-meta" \
  package.json 2>/dev/null
ls public/sitemap.xml public/robots.txt 2>/dev/null
grep -r "JsonLd\|json-ld\|application/ld+json" \
  src/ --include="*.tsx" --include="*.vue" -l 2>/dev/null

TSV Logging

Append to .godmode/seo-results.tsv: timestamp\tpage\taction\tmetric\tbefore\tafter\tstatus

Output Format

Print: SEO: Lighthouse {N}/100. CWV: LCP {N}s, INP {N}ms, CLS {N}. Verdict: {verdict}.

Keep/Discard Discipline

KEEP if: Lighthouse SEO >= previous AND CWV held
  AND structured data validates
DISCARD if: SEO dropped OR CWV regressed
  OR structured data errors

Stop Conditions

STOP when:
  - Lighthouse SEO >= 95 AND all CWV good
  - All pages have titles/descriptions/canonicals
  - Valid structured data on all page types
  - User requests stop OR max 10 iterations