AI Crawler Access Checker

An AI crawler checker tests your website's robots.txt and server headers to determine which AI systems can read, index, and cite your content. As of 2026, at least 14 distinct AI user-agents attempt to crawl content for systems including ChatGPT, Claude, Perplexity, and Google Gemini. Unlike traditional search crawlers, AI crawlers operate under two distinct modes: training access (reading content to train models) and retrieval access (reading content to answer live queries). A blocked training crawler may still allow retrieval — or vice versa. Most robots.txt configurations were written before AI crawlers existed and inadvertently block citation-eligible content.

This tool fetches your live robots.txt, parses it against all 14 known AI user-agents, and returns a color-coded access matrix: green (allowed), red (blocked), yellow (ambiguous — no explicit rule). For any blocked crawler, we generate the exact robots.txt directive to allow it — or, if you want to block training but allow retrieval, the precise two-rule configuration to achieve that split.

No signup required. Paste your URL. Results in under 10 seconds.

How to use

1. Paste your site's root URL (e.g., https://yourdomain.com) into the field above.
2. Click "Check AI Crawler Access."
3. Review the access matrix — red rows are P0 blocks that make you invisible to that AI system.
4. Copy the generated robots.txt fix block.
5. Optionally: run a full CiteFuel audit to check llms.txt, schema, and passage citability alongside crawler access.

Related: llms.txt Validator · AI Citation Readiness Score · Methodology