AI Sniff
See how well your site is understood by AI agents and AI search.
ChatSniff checks how ChatGPT, Claude, Gemini, Perplexity and AI agents discover, read and understand your website — and shows you what to fix.
A site can look perfect to people and be almost empty to an AI crawler.
No sign-upFreeActionable results
AI readiness checklist
Each item is labelled with how strong the evidence is. No magic promises.
robots.txt
Which AI and search robots may read you.
JavaScript rendering
What an AI crawler sees without running scripts.
Business information
Who you are, where, how to reach you.
Structured data
schema.org Organization, Product, FAQ…
sitemap.xml
All your important pages, discoverable.
Agent standards
Markdown, llms.txt, MCP and A2A discovery files.
How AI systems find and use your website
1. Your website
Crawlers visit, read your HTML and your files (robots.txt, sitemap).
2. AI search
ChatGPT, Claude, Gemini and Perplexity index or fetch your pages to answer questions.
3. AI agents
Agents recommend your products and act for users — if they can understand you.
What actually moves AI visibility
| Evidence | Item | Why |
|---|---|---|
| proven | AI crawlers allowed in robots.txt | OAI-SearchBot, ChatGPT-User, Claude-SearchBot, PerplexityBot, Googlebot, Bingbot. Blocking OAI-SearchBot removes you from ChatGPT search. |
| proven | Content readable without JavaScript | Major AI crawlers don't run JavaScript: content painted only by scripts is invisible to them. |
| proven | The answer at the top | AI answers quote mostly the first third of a page: say who you are and what you offer right away. |
| proven | Present in Google, Bing and Brave | Sitemap, indexable pages and clean redirects feed the indexes every assistant relies on. |
| helps, not proven for AI | Business identity (schema.org) | Organization / LocalBusiness data helps machines identify you. Studies show no direct effect on AI citations, so it's a foundation, not a magic switch. |
| emerging | Markdown version, llms.txt, agent files | Emerging standards for AI agents (text/markdown, llms.txt, MCP, A2A). Cheap to add; evidence of impact is still weak — we say so. |
Sources: public 2026 studies on AI citations, Google and Cloudflare documentation. Updated every week.
Make your site AI-ready
Sniff
Paste your address.
See what AI misses
Blocked robots, hidden content, unclear identity.
Get the fix
robots.txt, structured data and llms.txt written for you.
Keep up
Standards move monthly — we track them.
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Make your site AI-ready
Get found by people — and by the assistants they ask.