Why Claude Can't Find My Website | AiVIS.biz
Claude (by Anthropic) combines training data with real-time web access via ClaudeBot. If Claude gives wrong or missing information about your site, the extraction pipeline is failing.
How Claude accesses web content
Claude uses two pathways: pre-trained knowledge (from its training corpus) and real-time web access via ClaudeBot. The training corpus captures a snapshot of the web — if your content was not well-structured at the time of training, Claude's base knowledge may be incomplete or incorrect.
ClaudeBot respects robots.txt directives. If your robots.txt blocks Anthropic's crawler (User-agent: ClaudeBot or User-agent: anthropic-ai), Claude cannot access your content for real-time responses.
Common reasons Claude misses your site
ClaudeBot blocked in robots.txt. Your site was poorly structured at training time and no fresh crawl updates have occurred. Client-side rendering delivers empty HTML to ClaudeBot. Missing entity metadata prevents Claude from attributing content to your domain.
Fixing Claude access
Allow ClaudeBot in robots.txt. Ensure server-side rendering. Add Organization and Article JSON-LD. Write clear, attributable content. Run an AiVIS.biz audit to identify the specific gaps in your extraction readiness for Claude and other models.
Frequently Asked Questions
- Does Claude use a different crawler than ChatGPT?
- Yes. Claude uses ClaudeBot (or anthropic-ai), while ChatGPT uses GPTBot. Each requires separate robots.txt allowances.
- Can I test what Claude knows about my site?
- AiVIS.biz citation testing evaluates brand presence across multiple AI models including Claude. You can see whether Claude mentions your brand and how accurately.