Claude SEO: SEO Skill for Claude Code Claude SEO is an open source SEO analysis plugin for Claude Code. It runs 25 sub skills and 18 specialist agents in parallel across technical SEO, content quality (E E A T), Schema.org markup, AI search optimization (GEO), local SEO, e commerce, and international SEO. Every audit produces a prioritized action plan with testable recommendations grounded in primary source guidance from Google. Two versions of this skill. 🌐 Public open source → AgriciDaniel/claude seo : MIT, public releases, no membership. Use this if you want stable + downloadable. 🔒 Community private mirror → AI Marketing Hub/claude seo : early access to upcoming features and direct collaboration with the AI Marketing Hub Pro community. Requires membership. Why Claude SEO AI search first. Aligned with Google's AI Optimization Guide. Question based citability scoring, primary source evidence on llms.txt, IPTC TrainedAlgorithmicMedia for AI generated product images, agent friendly page checks per web.dev. Parallel execution. Full site audits spawn up to 15 specialist agents simultaneously. Site level audits complete in minutes rather than hours. Falsifiable, not promotional. Every recommendation carries the first principle observation it rests on, its dependency relationships, an explicit "how would we know this failed?" check, and a leading indicator. See Methodology. Real results Google Search Console for a site started 23 March 2026 and run on this workflow: total clicks and impressions across its first three months, through 12 June 2026. Using Codex instead of Claude Code? Use Codex SEO, the Codex first port with TOML agents, plugin packaging, deterministic runners, and the same SEO workflow surface. Who this is for SEO agencies running 5+ client sites. Replace quarterly deep audits with weekly automated runs. Same team capacity, 4× audit cadence, every recommendation comes with a falsifiability check the client can verify. In house SEO leads at SaaS / publishe