Claude SEO

Overview

Claude SEO is a universal SEO skill that turns Claude Code into a full-featured SEO audit platform. Rather than checking a handful of meta tags, it runs a structured three-layer pipeline — directive parsing, orchestration with industry detection, and parallel agent execution — to analyze a site across eight SEO dimensions simultaneously. The system produces reports grounded in first-principle observations rather than generic checklists, with every recommendation carrying its supporting evidence, dependency relationships, falsifiability criteria, and monitoring indicators.

Key Capabilities

25 sub-skills across eight categories: The skill covers technical SEO (Core Web Vitals, rendering, indexation), content quality (E-E-A-T scoring against Google’s September 2025 Search Quality Rater Guidelines), schema and structured data (12+ Schema.org types with deprecation detection), AI search optimization (passage citability scoring, entity presence, llms.txt analysis), local and maps intelligence (GBP auditing, NAP consistency, review sentiment), international SEO (hreflang audit and generation, machine-translation QA), backlink analysis (Moz/Bing/Common Crawl integration, parasite-SEO risk detection), and e-commerce SEO (ProductGroup, MemberProgram schema validators).

18 concurrent audit agents: A full site audit dispatches up to 15 agents in parallel — technical auditor, content quality analyzer, schema validator, AI-search optimizer, local SEO specialist, e-commerce evaluator, backlink analyst, competitive reviewer, international specialist, visual/rendering analyzer, page-speed diagnostician, security validator, semantic clustering engine, drift detector, maps intelligence agent, data aggregation, report formatter, and recommendation prioritizer.

4-tier Google API integration: Tier 0 (API key only) gives PageSpeed Insights and CrUX field data with 25-week trends. Tier 1 adds Search Console queries, URL Inspection, and Indexing API. Tier 2 adds GA4 organic traffic and landing page data. Tier 3 adds Keyword Planner volume and competition. Credentials stored locally with 0o600 permissions.

Optional MCP extensions: DataForSEO (live SERP data, keyword research, 23 commands across 9 API modules), Firecrawl (full-site crawling), Ahrefs (backlinks and organic keywords), SE Ranking (AI share-of-voice across ChatGPT, Gemini, Perplexity), Profound (LLM citation tracking), Bing Webmaster with IndexNow, and Unlighthouse (multi-page Lighthouse runner).

Drift monitoring: The /seo drift command takes SQLite snapshots of audit results over time, enabling change detection and trend tracking without re-running full audits.

Use Cases

SEO professionals use Claude SEO to run comprehensive site audits that would take 4-8 hours manually in 10-15 minutes. Content teams use the E-E-A-T scoring to verify content quality before publishing. Technical SEO specialists use the SPA rendering detection and Core Web Vitals analysis to diagnose performance issues. AI-search strategists use the GEO/AEO module to optimize content for citation in AI Overviews and LLM responses. Local businesses use the maps intelligence and GBP auditing for local search visibility. E-commerce teams use the commerce-specific validators for product schema and structured data.

Considerations

Claude SEO is a Claude Code skill — it requires the Claude Code CLI as its primary interface (a Codex port exists separately at AgriciDaniel/codex-seo). The optional extensions require their own accounts (DataForSEO, Ahrefs, etc.) but the core audit runs without any paid dependencies. SPA rendering requires Playwright Chromium, which auto-installs during setup. At 15.5K stars with 410+ tests and active development (v2.2.5 released August 2026), the project is well-maintained with a clear release cadence.

Who It’s For

SEO professionals who want automated, evidence-backed audits with falsifiable recommendations. Development teams who need technical SEO integrated into their CLI workflow. Content strategists optimizing for both traditional search and AI search engines. Agencies running audits across multiple client sites who want reproducible, consistent analysis without per-domain licensing fees.