Free SEO Tool
Free AI Crawlability Checker
Check whether AI crawlers — GPTBot, ClaudeBot, PerplexityBot, Google-Extended, CCBot, and more — can actually access your site. If they're blocked, your content will never appear in ChatGPT, Claude, Perplexity, or AI Overviews. Free, unlimited, no signup.
What is it?
What is an AI crawlability checker?
An AI crawlability checker tests whether the specific user agents that power AI search — GPTBot, ChatGPT-User, ClaudeBot, PerplexityBot, Google-Extended, CCBot, Applebot-Extended, and others — can fetch your pages. It's different from a classic SEO crawlability tool: regular tools check Googlebot, but a huge number of sites silently block LLM crawlers in robots.txt or via Cloudflare's 2023 AI-bot block preset. If those crawlers can't reach you, you can publish the best content in the world and still be invisible inside ChatGPT, Claude, Perplexity, and Google AI Overviews. Our checker simulates each major AI crawler's access, reads your robots.txt, checks response codes, and flags which bots are locked out.
How to use the AI crawlability checker
Enter your domain (or any page URL). The checker fetches your robots.txt, attempts a GET request using each major AI crawler's user agent, and returns a per-bot verdict: allowed, disallowed (with the blocking rule), or soft-blocked (bot-specific server response). Most sites are accidentally blocking 2–4 of the major AI crawlers — often via Cloudflare's "block AI bots" toggle that was enabled by default in mid-2024. Fix the blocks, then pair with our Robots.txt Checker to validate the new rules and our AI Citation Tracker to confirm your content starts surfacing in LLM answers over the following 2–6 weeks.
What is it?
What is an AI crawlability checker?
An AI crawlability checker tests whether the specific user agents that power AI search — GPTBot, ChatGPT-User, ClaudeBot, PerplexityBot, Google-Extended, CCBot, Applebot-Extended, and others — can fetch your pages. It's different from a classic SEO crawlability tool: regular tools check Googlebot, but a huge number of sites silently block LLM crawlers in robots.txt or via Cloudflare's 2023 AI-bot block preset. If those crawlers can't reach you, you can publish the best content in the world and still be invisible inside ChatGPT, Claude, Perplexity, and Google AI Overviews. Our checker simulates each major AI crawler's access, reads your robots.txt, checks response codes, and flags which bots are locked out.
How to use the AI crawlability checker
Enter your domain (or any page URL). The checker fetches your robots.txt, attempts a GET request using each major AI crawler's user agent, and returns a per-bot verdict: allowed, disallowed (with the blocking rule), or soft-blocked (bot-specific server response). Most sites are accidentally blocking 2–4 of the major AI crawlers — often via Cloudflare's "block AI bots" toggle that was enabled by default in mid-2024. Fix the blocks, then pair with our Robots.txt Checker to validate the new rules and our AI Citation Tracker to confirm your content starts surfacing in LLM answers over the following 2–6 weeks.
Results
What you can do with our free AI crawlability checker
Find out which AI crawlers your site is accidentally blocking — and unlock invisible-to-AI pages in minutes.
Results
What you can do with our free AI crawlability checker
Find out which AI crawlers your site is accidentally blocking — and unlock invisible-to-AI pages in minutes.
Find accidental AI bot blocks
Most sites block 2–4 major AI crawlers without knowing — often via Cloudflare's default AI-bot-block preset or copied robots.txt rules. One check reveals which bots are locked out.
Find accidental AI bot blocks
Most sites block 2–4 major AI crawlers without knowing — often via Cloudflare's default AI-bot-block preset or copied robots.txt rules. One check reveals which bots are locked out.
Fix AI visibility at its root
Before investing in content or prompt tracking, confirm LLMs can even read your site. Unblocking AI crawlers is the cheapest, fastest AI-visibility lever — often more impactful than any content change.
Fix AI visibility at its root
Before investing in content or prompt tracking, confirm LLMs can even read your site. Unblocking AI crawlers is the cheapest, fastest AI-visibility lever — often more impactful than any content change.
Compare against competitors
Check whether top competitors are also accidentally blocking AI crawlers. Many are — and that's your fastest path to becoming the cited source in AI answers for your category.
Compare against competitors
Check whether top competitors are also accidentally blocking AI crawlers. Many are — and that's your fastest path to becoming the cited source in AI answers for your category.
Audit after infra changes
Cloudflare toggles, CDN changes, WAF updates, and origin migrations silently change crawler access. Run a post-deploy check to catch regressions before AI visibility drops weeks later.
Audit after infra changes
Cloudflare toggles, CDN changes, WAF updates, and origin migrations silently change crawler access. Run a post-deploy check to catch regressions before AI visibility drops weeks later.
Build your llms.txt foundation
llms.txt is the AI-era sitemap. Before publishing one, confirm the baseline — which bots already access your content and which are blocked — so your llms.txt actually reaches its intended audience.
Build your llms.txt foundation
llms.txt is the AI-era sitemap. Before publishing one, confirm the baseline — which bots already access your content and which are blocked — so your llms.txt actually reaches its intended audience.
Debug low AI citation rates
If our AI Citation Tracker shows low mention rates despite strong content, bot blocks are the most common cause. This checker isolates the issue in seconds, not weeks.
Debug low AI citation rates
If our AI Citation Tracker shows low mention rates despite strong content, bot blocks are the most common cause. This checker isolates the issue in seconds, not weeks.
Free Tools
Try our other free SEO tools
No signup required — use any tool instantly
Free Tools
Try our other free SEO tools
No signup required — use any tool instantly
SERP & Rankings
Technical SEO
AI Writing & Content
Keyword Research
AI Visibility
Social & YouTube
How it Works
How AIclicks works
How it Works
How AIclicks works
01
Brand Audit
We start by mapping your current AI visibility, analyzing how often you appear in LLMs answers. This gives us a precise roadmap of what needs to be fixed, improved, or created.
01
Brand Audit
We start by mapping your current AI visibility, analyzing how often you appear in LLMs answers. This gives us a precise roadmap of what needs to be fixed, improved, or created.
02
AI-Optimized Content
We produce content crafted specifically for AI models. We reinforce this with citation-worthy sources and high-authority mentions that help AI systems trust and reference your brand.
02
AI-Optimized Content
We produce content crafted specifically for AI models. We reinforce this with citation-worthy sources and high-authority mentions that help AI systems trust and reference your brand.
03
Optimization, Tracking & Insights
You get access to a custom AI visibility dashboard, weekly progress updates, and continuous optimization cycles. We monitor ranking shifts, citation changes, competitors, and new AI opportunities.
03
Optimization, Tracking & Insights
You get access to a custom AI visibility dashboard, weekly progress updates, and continuous optimization cycles. We monitor ranking shifts, citation changes, competitors, and new AI opportunities.
Our Insights
Explore our blog
Our Insights
Explore our blog
Our Trackers
Tracker every major LLM
AIclicks covers every major LLM out there
Our Trackers
Tracker every major LLM
AIclicks covers every major LLM out there
FAQ
Which AI crawlers does this tool check?
GPTBot (OpenAI), ChatGPT-User, ClaudeBot (Anthropic), PerplexityBot, Google-Extended (Gemini training), CCBot (Common Crawl), Applebot-Extended, Bytespider (ByteDance), Amazonbot, and a few others. Each is tested against your robots.txt and live server response separately.
Why would a site accidentally block AI crawlers?
Most commonly: Cloudflare's "block AI bots" toggle (on by default for many accounts since mid-2024), copied robots.txt rules from example templates that disallow all bots, Fastly/Akamai managed rules, and WAF policies that rate-limit non-Google user agents. Almost every site we test blocks at least one major AI crawler.
Do I need to allow all AI crawlers?
Only the ones that power surfaces where you want visibility. Allow GPTBot + ChatGPT-User for ChatGPT visibility, ClaudeBot for Claude, PerplexityBot for Perplexity, and Google-Extended for Gemini + AI Overviews. Block training-only crawlers like CCBot if you're concerned about model-training usage.
How is this different from a regular crawlability checker?
Classic tools check Googlebot and Bingbot. They'll report "crawlable" while every AI crawler is blocked. We test the AI-specific user agents — the ones that determine whether you show up in ChatGPT, Claude, Perplexity, and Google AI Overviews — not just classic search engines.
How long until unblocking AI bots improves visibility?
GPTBot and ClaudeBot typically re-crawl within 7–14 days of access being restored. Full LLM citation visibility usually improves over 2–6 weeks as new crawl data flows into next training cycles and live retrieval indexes. Pair with our AI Citation Tracker to monitor progress.
FAQ
Which AI crawlers does this tool check?
GPTBot (OpenAI), ChatGPT-User, ClaudeBot (Anthropic), PerplexityBot, Google-Extended (Gemini training), CCBot (Common Crawl), Applebot-Extended, Bytespider (ByteDance), Amazonbot, and a few others. Each is tested against your robots.txt and live server response separately.
Why would a site accidentally block AI crawlers?
Most commonly: Cloudflare's "block AI bots" toggle (on by default for many accounts since mid-2024), copied robots.txt rules from example templates that disallow all bots, Fastly/Akamai managed rules, and WAF policies that rate-limit non-Google user agents. Almost every site we test blocks at least one major AI crawler.
Do I need to allow all AI crawlers?
Only the ones that power surfaces where you want visibility. Allow GPTBot + ChatGPT-User for ChatGPT visibility, ClaudeBot for Claude, PerplexityBot for Perplexity, and Google-Extended for Gemini + AI Overviews. Block training-only crawlers like CCBot if you're concerned about model-training usage.
How is this different from a regular crawlability checker?
Classic tools check Googlebot and Bingbot. They'll report "crawlable" while every AI crawler is blocked. We test the AI-specific user agents — the ones that determine whether you show up in ChatGPT, Claude, Perplexity, and Google AI Overviews — not just classic search engines.
How long until unblocking AI bots improves visibility?
GPTBot and ClaudeBot typically re-crawl within 7–14 days of access being restored. Full LLM citation visibility usually improves over 2–6 weeks as new crawl data flows into next training cycles and live retrieval indexes. Pair with our AI Citation Tracker to monitor progress.
Be the #1 Response in AI
Reach millions of consumers who are using AI to discover new products and brands
Be the #1 Response in AI
Reach millions of consumers who are using AI to discover new products and brands
Be the #1 Response in AI
Reach millions of consumers who are using AI to discover new products and brands