# SEO ProCheck

> Technical SEO and AI-search consulting by Claude Vincent. Receipt-backed, no-hype guidance on how search engines and AI answer engines actually read, render, and cite websites.

## The AI-readability series (start here)
- [AGENTS.md vs llms.txt vs llms-full.txt: Which Agent File Does What](https://seoprocheck.com/research/ai-search/agents-md-vs-llms-txt/): How AGENTS.md (for coding agents), llms.txt and llms-full.txt (for answer engines) differ, plus the RSL licensing layer most checklists miss.
- [The Machine-Readable Web: What robots.txt, llms.txt, Schema, WebMCP and Entity Signals Actually Do in 2026](https://seoprocheck.com/research/ai-search/machine-readable-web-standards/)
- [The AI Crawler Map: Every Bot Reading Your Site in 2026](https://seoprocheck.com/research/ai-search/ai-crawler-map/)
- [The Forgotten HTML: What AI Crawlers Really See on Your Expensive Website](https://seoprocheck.com/research/ai-search/the-forgotten-html/)
- [SSR vs CSR: Why Rendering Decides Whether AI Can Read Your Site](https://seoprocheck.com/research/ai-search/ssr-vs-csr-ai-crawlers/)
- [Entity HTML: How to Become a Machine-Readable Brand (Knowledge Graph, sameAs & the Entitymap)](https://seoprocheck.com/research/ai-search/entity-html-machine-readable-brand/)
- [WebMCP, Explained: How Your Site Hands AI Agents a Menu of Actions](https://seoprocheck.com/research/ai-search/webmcp-explained/)
- [Is Your Site Agent-Ready? The Lighthouse Agentic-Browsing Audit and How to Pass It](https://seoprocheck.com/research/ai-search/agent-ready-lighthouse-agentic-browsing/)
- [The Complete robots.txt Reference: Precedence, Wildcards, AI Bots & Real-World Receipts](https://seoprocheck.com/indexing-crawl/robots-txt-complete-reference/)
- [llms.txt Explained: What It Is and Whether You Need One](https://seoprocheck.com/research/ai-search/llms-txt-explained/)
- [FAQ Schema: Why You Still Keep It After Google Retired the Rich Result](https://seoprocheck.com/schema-guides/faq-schema-still-worth-it/)
- [Google AI Overviews: How to Optimize for AI Overview Citations](https://seoprocheck.com/research/ai-search/google-ai-overviews-seo-optimize-citations/)
- [How to Become a Cited Source in AI Answers](https://seoprocheck.com/research/ai-search/how-to-get-cited-in-ai/)

## Original research
- [Who Actually Serves an llms.txt? 184 Top Sites Measured](https://seoprocheck.com/research/ai-search/llms-txt-adoption-measured/)
- [Finding a Competitor's Sitemap, and Turning It Into a Change Log](https://seoprocheck.com/seo-strategy/competitor-sitemap-change-log/)
- [AI Crawler User Agents: The Current Names, and Which Ones Sites Actually Block](https://seoprocheck.com/research/ai-search/ai-crawler-user-agent-names-blocked/)
- [Can AI Crawlers Actually Read Your Site? I Measured 400 of the Biggest](https://seoprocheck.com/research/ai-search/ai-crawler-access-400-sites-measured/)

## About
- [Site](https://seoprocheck.com)
- [Author: Claude Vincent](https://www.linkedin.com/in/tech-seo)
- [Consulting](https://seoprocheck.com/consulting/advanced-seo-audit/)