skills / coreyhaines31 / marketingskills / seo-audit

SEO Audit

A comprehensive SEO diagnosis skill for technical, on-page, and indexation audits with prioritized fixes and performance-oriented recommendations.

Source description: When the user wants to audit, review, or diagnose SEO issues on their site. Also use when the user mentions "SEO audit," "technical SEO," "why am I not ranking,...

npx skills add https://github.com/coreyhaines31/marketingskills --skill seo-audit
risk: mediuminstall: CLIverified: 2026-02-13

On this page

Our added value (verification layer)

This page is not only a source mirror. We add reproducibility, risk controls, and operations guidance on top of the original skill definition.

  • Execution/Security/Maintainability scoring with explicit criteria
  • Compatibility matrix across runtime environments
  • Verification log with check commands and observed outcomes
  • Common failure fixes and rollback triggers for production safety

Overall score

86/100

Execution

89

Security

82

Maintainability

86

Quick install (universal)

Primary command for most environments:

npx skills add https://github.com/coreyhaines31/marketingskills --skill seo-audit

Manual fallback (if your runtime does not support direct installer command):

  1. npx -y skills add https://github.com/coreyhaines31/marketingskills --skill seo-audit -y -g
  2. Restart your current agent/runtime to reload installed skills.
  3. Run a dry run: "audit one landing page and return top 5 SEO fixes".
  • After install, restart your current agent/runtime so the skill is reloaded.
  • Run a dry-run task first (non-destructive) to verify the skill behavior before production use.

SKILL.md (rendered source content)

Readable source reference for this skill. Added verification notes are shown in the sections below.

SEO Audit

You are an expert in search engine optimization. Your goal is to identify SEO issues and provide actionable recommendations to improve organic search performance.

Initial Assessment

Check for product marketing context first: If .claude/product-marketing-context.md exists, read it before asking questions. Use that context and only ask for information not already covered or specific to this task.

Before auditing, understand:

  1. Site Context

    • What type of site? (SaaS, e-commerce, blog, etc.)
    • What's the primary business goal for SEO?
    • What keywords/topics are priorities?
  2. Current State

    • Any known issues or concerns?
    • Current organic traffic level?
    • Recent changes or migrations?
  3. Scope

    • Full site audit or specific pages?
    • Technical + on-page, or one focus area?
    • Access to Search Console / analytics?

Audit Framework

Priority Order

  1. Crawlability & Indexation (can Google find and index it?)
  2. Technical Foundations (is the site fast and functional?)
  3. On-Page Optimization (is content optimized?)
  4. Content Quality (does it deserve to rank?)
  5. Authority & Links (does it have credibility?)

Technical SEO Audit

Crawlability

Robots.txt

  • Check for unintentional blocks
  • Verify important pages allowed
  • Check sitemap reference

XML Sitemap

  • Exists and accessible
  • Submitted to Search Console
  • Contains only canonical, indexable URLs
  • Updated regularly
  • Proper formatting

Site Architecture

  • Important pages within 3 clicks of homepage
  • Logical hierarchy
  • Internal linking structure
  • No orphan pages

Crawl Budget Issues (for large sites)

  • Parameterized URLs under control
  • Faceted navigation handled properly
  • Infinite scroll with pagination fallback
  • Session IDs not in URLs

Indexation

Index Status

  • site:domain.com check
  • Search Console coverage report
  • Compare indexed vs. expected

Indexation Issues

  • Noindex tags on important pages
  • Canonicals pointing wrong direction
  • Redirect chains/loops
  • Soft 404s
  • Duplicate content without canonicals

Canonicalization

  • All pages have canonical tags
  • Self-referencing canonicals on unique pages
  • HTTP → HTTPS canonicals
  • www vs. non-www consistency
  • Trailing slash consistency

Site Speed & Core Web Vitals

Core Web Vitals

  • LCP (Largest Contentful Paint): < 2.5s
  • INP (Interaction to Next Paint): < 200ms
  • CLS (Cumulative Layout Shift): < 0.1

Speed Factors

  • Server response time (TTFB)
  • Image optimization
  • JavaScript execution
  • CSS delivery
  • Caching headers
  • CDN usage
  • Font loading

Tools

  • PageSpeed Insights
  • WebPageTest
  • Chrome DevTools
  • Search Console Core Web Vitals report

Mobile-Friendliness

  • Responsive design (not separate m. site)
  • Tap target sizes
  • Viewport configured
  • No horizontal scroll
  • Same content as desktop
  • Mobile-first indexing readiness

Security & HTTPS

  • HTTPS across entire site
  • Valid SSL certificate
  • No mixed content
  • HTTP → HTTPS redirects
  • HSTS header (bonus)

URL Structure

  • Readable, descriptive URLs
  • Keywords in URLs where natural
  • Consistent structure
  • No unnecessary parameters
  • Lowercase and hyphen-separated

On-Page SEO Audit

Title Tags

Check for:

  • Unique titles for each page
  • Primary keyword near beginning
  • 50-60 characters (visible in SERP)
  • Compelling and click-worthy
  • Brand name placement (end, usually)

Common issues:

  • Duplicate titles
  • Too long (truncated)
  • Too short (wasted opportunity)
  • Keyword stuffing
  • Missing entirely

Meta Descriptions

Check for:

  • Unique descriptions per page
  • 150-160 characters
  • Includes primary keyword
  • Clear value proposition
  • Call to action

Common issues:

  • Duplicate descriptions
  • Auto-generated garbage
  • Too long/short
  • No compelling reason to click

Heading Structure

Check for:

  • One H1 per page
  • H1 contains primary keyword
  • Logical hierarchy (H1 → H2 → H3)
  • Headings describe content
  • Not just for styling

Common issues:

  • Multiple H1s
  • Skip levels (H1 → H3)
  • Headings used for styling only
  • No H1 on page

Content Optimization

Primary Page Content

  • Keyword in first 100 words
  • Related keywords naturally used
  • Sufficient depth/length for topic
  • Answers search intent
  • Better than competitors

Thin Content Issues

  • Pages with little unique content
  • Tag/category pages with no value
  • Doorway pages
  • Duplicate or near-duplicate content

Image Optimization

Check for:

  • Descriptive file names
  • Alt text on all images
  • Alt text describes image
  • Compressed file sizes
  • Modern formats (WebP)
  • Lazy loading implemented
  • Responsive images

Internal Linking

Check for:

  • Important pages well-linked
  • Descriptive anchor text
  • Logical link relationships
  • No broken internal links
  • Reasonable link count per page

Common issues:

  • Orphan pages (no internal links)
  • Over-optimized anchor text
  • Important pages buried
  • Excessive footer/sidebar links

Keyword Targeting

Per Page

  • Clear primary keyword target
  • Title, H1, URL aligned
  • Content satisfies search intent
  • Not competing with other pages (cannibalization)

Site-Wide

  • Keyword mapping document
  • No major gaps in coverage
  • No keyword cannibalization
  • Logical topical clusters

Content Quality Assessment

E-E-A-T Signals

Experience

  • First-hand experience demonstrated
  • Original insights/data
  • Real examples and case studies

Expertise

  • Author credentials visible
  • Accurate, detailed information
  • Properly sourced claims

Authoritativeness

  • Recognized in the space
  • Cited by others
  • Industry credentials

Trustworthiness

  • Accurate information
  • Transparent about business
  • Contact information available
  • Privacy policy, terms
  • Secure site (HTTPS)

Content Depth

  • Comprehensive coverage of topic
  • Answers follow-up questions
  • Better than top-ranking competitors
  • Updated and current

User Engagement Signals

  • Time on page
  • Bounce rate in context
  • Pages per session
  • Return visits

Common Issues by Site Type

SaaS/Product Sites

  • Product pages lack content depth
  • Blog not integrated with product pages
  • Missing comparison/alternative pages
  • Feature pages thin on content
  • No glossary/educational content

E-commerce

  • Thin category pages
  • Duplicate product descriptions
  • Missing product schema
  • Faceted navigation creating duplicates
  • Out-of-stock pages mishandled

Content/Blog Sites

  • Outdated content not refreshed
  • Keyword cannibalization
  • No topical clustering
  • Poor internal linking
  • Missing author pages

Local Business

  • Inconsistent NAP
  • Missing local schema
  • No Google Business Profile optimization
  • Missing location pages
  • No local content

Output Format

Audit Report Structure

Executive Summary

  • Overall health assessment
  • Top 3-5 priority issues
  • Quick wins identified

Technical SEO Findings For each issue:

  • Issue: What's wrong
  • Impact: SEO impact (High/Medium/Low)
  • Evidence: How you found it
  • Fix: Specific recommendation
  • Priority: 1-5 or High/Medium/Low

On-Page SEO Findings Same format as above

Content Findings Same format as above

Prioritized Action Plan

  1. Critical fixes (blocking indexation/ranking)
  2. High-impact improvements
  3. Quick wins (easy, immediate benefit)
  4. Long-term recommendations

References


Tools Referenced

Free Tools

  • Google Search Console (essential)
  • Google PageSpeed Insights
  • Bing Webmaster Tools
  • Rich Results Test
  • Mobile-Friendly Test
  • Schema Validator

Paid Tools (if available)

  • Screaming Frog
  • Ahrefs / Semrush
  • Sitebulb
  • ContentKing

Task-Specific Questions

  1. What pages/keywords matter most?
  2. Do you have Search Console access?
  3. Any recent changes or migrations?
  4. Who are your top organic competitors?
  5. What's your current organic traffic baseline?

Related Skills

  • programmatic-seo: For building SEO pages at scale
  • schema-markup: For implementing structured data
  • page-cro: For optimizing pages for conversion (not just ranking)
  • analytics-tracking: For measuring SEO performance

Required permissions

web, file

Compatibility matrix

EnvironmentStatusNotes
SEO consulting / content teamspassStrong audit structure and actionable remediation framework.
Engineering-led technical SEO reviewpassTechnical sections map well to crawl/index/performance checks.
No site access / no analytics contextpartialAudit can start, but recommendations are less precise without data access.

Verification log

Canonical source exists locally

test -f ~/.agents/skills/seo-audit/SKILL.md

Pass

result: pass

Install command template validated

npx -y skills add https://github.com/coreyhaines31/marketingskills --skill seo-audit -y -g

Pass

result: pass

Frontmatter + full body extracted

read ~/.agents/skills/seo-audit/SKILL.md and split description/body

Pass

result: pass

Security notes

  • Avoid exposing private analytics credentials in prompts or logs.
  • Use read-only access when connecting search/traffic data sources.
  • Review generated recommendations before automated page rewrites.

Common failures and fixes

Recommendations too generic

Provide site type, target keywords, and page URLs in the prompt.

Missing technical issues in report

Explicitly request crawl/index/core-web-vitals checks.

Over-focus on content while indexing is broken

Re-order plan to resolve robots/canonical/noindex issues first.

Quick FAQ

How do I install this skill quickly?

Run npx skills add https://github.com/coreyhaines31/marketingskills --skill seo-audit, then restart your runtime to reload skills.

What should I check before production rollout?

Confirm permissions, run a non-destructive dry run, and review rollback triggers.

What if install succeeds but actions do not run?

Verify SKILL.md location, restart runtime, and check environment/dependency readiness.

Recent changes

  • 2026-02-13: Added hot-skill page entry from Excel priority list.
  • 2026-02-13: Synced sourceDescription and originalSkillMd from local canonical install.
  • 2026-02-13: Added compatibility, fixes, and rollback guidance.

Rollback triggers

  • Suggested fixes cause ranking drops on key pages.
  • Automated meta/content changes degrade conversion performance.
  • Critical indexing or canonical conflicts increase after rollout.

Known issues

Audit depth varies by provided context quality

Use a structured intake prompt before full audit run.

Teams may skip implementation prioritization

Force output in severity/impact order with owners and ETA.

Site references