Free AI search tools

Working checks, no sign-up. Each one answers a question AI crawlers and engines ask about your site.

• llms.txt checker and validatorFree llms.txt validator: checks that /llms.txt exists, follows the llmstxt.org format (H1, summary, H2 link lists), serves as text, and that its links load.
• robots.txt checker and generator for AI crawlersFree robots.txt tester: see which AI crawlers (GPTBot, ClaudeBot, OAI-SearchBot, PerplexityBot, Google-Extended and more) your rules allow or block, then generate a fixed file.
• AI crawler checkerFetches your site as each AI crawler to catch firewall and CDN blocks robots.txt doesn't show.
• AI visibility checkerAsks ChatGPT, Claude, Gemini, Perplexity and Grok buyer questions and measures how often they pick you.
• llms.txt generator for ShopifyBuilds an llms.txt from a Shopify store's collections and policies.

Looking up a specific bot? See the AI crawler directory.