Version History

Changelog for SEO CodeBase Auditor SKILL.

v5.0 Current

Latest release with competitive gap analysis enhancements.

24 pillars | 22 prompt templates

Staging/Dev Subdomain Detection (Pillar 2) — Publicly accessible staging environments, leaked canonical/OG references, auth-gating recommendations
URL Slug Quality Evaluation (Pillar 4) — Keyword inclusion, stop word bloat, meaningfulness, length assessment
Sitemap URL Inventory Analysis (Pillar 9) — URL categorization by type, low-value inflation detection, sitemap cleanup
OG/Twitter Quality Review (Pillar 10) — Beyond presence checks: og:image dimensions, og:title divergence, twitter:card appropriateness, og:description quality
Two-Layer Trust Page Verification (Pillar 16) — Exists + Reachable verification, automated contact pathway detection
Keyword Placement Scoring (Pillar 1) — Five highest-signal zones: title, H1, URL slug, first paragraph, H2
Mandatory Evidence/Impact/Fix Format — Three-part finding structure enforced across all pillars
Report Detail Writing Rules — 6 detailed writing rules added
5 New Prompt Templates: E-E-A-T Deep Audit, Staging Environment Audit, URL Slug & Keyword Placement Audit, Social SEO Quality Audit, Sitemap URL Inventory Audit

IndexNow Protocol — Setup and submission guidance in Pillar 9: key file hosting, HTTP POST to api.indexnow.org, response code reference, curl test command
Missing Title Tag Detection — Fix workflow with step-by-step remediation
Short Title Tag Remediation — Under 40 character flagging with rewrite guidance
Meta Description A/B Testing — Framework for testing variant descriptions
Bing Webmaster Tools Monitoring — CTR tracking recommendation
Quarterly Review Cycle — Meta description freshness guidance
2 New Prompt Templates: Title & Meta Description Optimization, IndexNow Setup
Conclusion Section — F9XR Team attribution added

Extended from 23 to 24 pillars — Video & YouTube SEO added
Video & YouTube SEO Pillar — VideoObject schema, YouTube embed best practices, transcripts, thumbnails, video sitemaps, channel signals, accessibility, rich result eligibility, performance impact
Voice Search Optimization — Explicit sub-discipline within Pillar 18 (AI/SGE/LLM)
Keyword Density Calculation — Methodology added to Pillar 7
Report Customization — Attribution line support, emoji heading option, fix-type grouping option
2 New Prompt Templates
Expanded Output Blueprint — Revenue Impact, Time to Impact, Business Value columns

Extended from 22 to 23 pillars — Competitor SEO Analysis added
Enterprise Task-Force Persona — 14 specialized roles defined
Crawl Orchestration & Discovery Phase — Detailed workspace exploration
Competitor SEO Analysis Pillar — 3-4 competitor comparison across 12 dimensions
Advanced Semantic SEO Depth — Entity salience, passage optimization, topic clustering, co-occurrence, taxonomy quality, information gain, NLP readiness
Filled Remaining Gaps: FCP/TTFB in CWV, mobile/desktop split, redirect loops, soft 404s, broken external links, parameterized URLs, infinite crawl traps, crawl budget, CDN/compression/caching/server-response, duplicate pages/metadata, CTR/SERP optimization, structured content layout, table optimization, Organization/Service/Person schema, E-E-A-T Experience signals, reputation audit, content credibility
4 New Prompt Templates
Expanded Output Blueprint — Revenue/Traffic Opportunity sections, CSV export, Implementation Guidance, Fix Type fields, Medium-Term and Long-Term sections

22 pillars (up from 14)

Extended from 14 to 22 pillars — 8 new pillars added
New Pillars: JavaScript Framework SEO (Next.js/Nuxt/Astro/SPA), E-E-A-T Signals, Rich Results Eligibility, AI/SGE/LLM Optimization, CI/CD & Automation, Migration SEO, Content Pruning & Consolidation, Third-Party Script Audit
Auditor Persona — 14-role enterprise task force defined
Core Principles — Evidence over opinion, severity as impact function, fix as deliverable, context-aware criteria
5-Pass Process Workflow — Discover, Analyze, Prioritize, Report, Critique
Restraint and Self-Critique — False positive prevention guidelines
Report-Writing Guidance — Detailed writing rules
7 New Prompt Templates

14 pillars (up from 5)

Extended from 5 to 14 pillars — 9 new pillars added
New Pillars: Performance SEO (Core Web Vitals), Mobile SEO, URL Structure & Site Architecture, Internal Linking & Link Equity, XML Sitemap & Robots.txt, Security SEO, Accessibility (a11y) SEO, E-Commerce SEO, Blog & Content SEO
Enhanced Cross-File Analysis
Prompt Templates — Initial template set
Quick Wins Section — Added to output blueprint

5 core pillars

5 Core Pillars: On-Page SEO, Technical SEO, Semantic SEO & Content Optimization, Image SEO, Social & Regional SEO
Basic audit workflow
Markdown report output
Priority matrix