isvisible.ai?

isvisible.ai is a free online tool that tells you whether AI crawlers can actually access your website. It scans your site against 13 different AI agents — from OpenAI's GPTBot to PerplexityBot and Google-Extended — and gives you a simple 0-100 visibility score. No signup, no cost, just paste your URL and get results in seconds.

The tool works by checking your robots.txt file (the same one search engines already use) and looking for the newer llms.txt file that some sites now publish for AI assistants. Then it performs a live probe with each crawler's user agent to confirm whether access is really allowed or blocked. The report breaks down results by category: search engines, AI training crawlers, and AI answer engines. You also get a downloadable PDF and a transparent scoring methodology so you know exactly where your site stands.

If you run a website, blog, or online business, this tool is a quick reality check. As more people use ChatGPT, Claude, and Perplexity to find information, having your content visible to those crawlers matters. isvisible.ai helps you spot whether you're accidentally blocking AI assistants — and gives you a clear starting point to fix it.