From claude-seo
Analyzes websites for AI search optimization (GEO): citability scoring, llms.txt compliance, brand signals, structural readability, multi-modal content, and crawler accessibility.
npx claudepluginhub agricidaniel/claude-seo --plugin claude-seoThis skill uses the workspace's default tool permissions.
| Metric | Value | Source |
Guides strict Test-Driven Development (TDD): write failing tests first for features, bugfixes, refactors before any production code. Enforces red-green-refactor cycle.
Guides systematic root cause investigation for bugs, test failures, unexpected behavior, performance issues, and build failures before proposing fixes.
Guides A/B test setup with mandatory gates for hypothesis validation, metrics definition, sample size calculation, and execution readiness checks.
| Metric | Value | Source |
|---|---|---|
| AI Overviews reach | 1.5 billion users/month across 200+ countries | |
| AI Overviews query coverage | 50%+ of all queries | Industry data |
| AI-referred sessions growth | 527% (Jan-May 2025) | SparkToro |
| ChatGPT weekly active users | 900 million | OpenAI |
| Perplexity monthly queries | 500+ million | Perplexity |
Brand mentions correlate 3x more strongly with AI visibility than backlinks. (Ahrefs December 2025 study of 75,000 brands)
| Signal | Correlation with AI Citations |
|---|---|
| YouTube mentions | ~0.737 (strongest) |
| Reddit mentions | High |
| Wikipedia presence | High |
| LinkedIn presence | Moderate |
| Domain Rating (backlinks) | ~0.266 (weak) |
Only 11% of domains are cited by both ChatGPT and Google AI Overviews for the same query, so platform-specific optimization is essential.
Optimal passage length: 134-167 words for AI citation.
Strong signals:
Weak signals:
92% of AI Overview citations come from top-10 ranking pages, but 47% come from pages ranking below position 5, demonstrating different selection logic.
Strong signals:
Weak signals:
Content with multi-modal elements sees 156% higher selection rates.
Check for:
Strong signals:
Weak signals:
AI crawlers do NOT execute JavaScript. Server-side rendering is critical.
Check for:
Check robots.txt for these AI crawlers:
| Crawler | Owner | Purpose |
|---|---|---|
| GPTBot | OpenAI | ChatGPT web search |
| OAI-SearchBot | OpenAI | OpenAI search features |
| ChatGPT-User | OpenAI | ChatGPT browsing |
| ClaudeBot | Anthropic | Claude web features |
| PerplexityBot | Perplexity | Perplexity AI search |
| CCBot | Common Crawl | Training data (often blocked) |
| anthropic-ai | Anthropic | Claude training |
| Bytespider | ByteDance | TikTok/Douyin AI |
| cohere-ai | Cohere | Cohere models |
Recommendation: Allow GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot for AI search visibility. Block CCBot and training crawlers if desired.
The emerging llms.txt standard provides AI crawlers with structured content guidance.
Location: /llms.txt (root of domain)
Format:
# Title of site
> Brief description
## Main sections
- [Page title](url): Description
- [Another page](url): Description
## Optional: Key facts
- Fact 1
- Fact 2
Check for:
/llms.txtNew standard (December 2025) for machine-readable AI licensing terms.
Backed by: Reddit, Yahoo, Medium, Quora, Cloudflare, Akamai, Creative Commons
Check for: RSL implementation and appropriate licensing terms.
| Platform | Key Citation Sources | Optimization Focus |
|---|---|---|
| Google AI Overviews | Top-10 ranking pages (92%) | Traditional SEO + passage optimization |
| ChatGPT | Wikipedia (47.9%), Reddit (11.3%) | Entity presence, authoritative sources |
| Perplexity | Reddit (46.7%), Wikipedia | Community validation, discussions |
| Bing Copilot | Bing index, authoritative sites | Bing SEO, IndexNow |
Generate GEO-ANALYSIS.md with:
/llms.txt fileIf DataForSEO MCP tools are available, use ai_optimization_chat_gpt_scraper to check what ChatGPT web search returns for target queries (real GEO visibility check) and ai_opt_llm_ment_search with ai_opt_llm_ment_top_domains for LLM mention tracking across AI platforms.
| Scenario | Action |
|---|---|
| URL unreachable (DNS failure, connection refused) | Report the error clearly. Do not guess site content. Suggest the user verify the URL and try again. |
| AI crawlers blocked by robots.txt | Report exactly which crawlers are blocked and which are allowed. Provide specific robots.txt directives to add for enabling AI search visibility. |
| No llms.txt found | Note the absence and provide a ready-to-use llms.txt template based on the site's content structure. |
| No structured data detected | Report the gap and provide specific schema recommendations (Article, Organization, Person) for improving AI discoverability. |