Tool 01·Free
21 AI bots · robots.txt · llms.txtIs Your Site Open to AI and Search Bots?
Before ChatGPT, Perplexity or Gemini can cite a page, their bots need to reach it. This tool shows what your robots.txt rules and meta tags say to 21 AI and search bots. Verifying access is the first step; it does not measure whether your site is cited in an answer.
No Access, No Citation
In traditional SEO the goal is to rank. In AI-assisted search the goal is to be cited in the answer. Both share the same precondition: bots can reach your pages and the content actually answers the question.
A search bot blocked by mistake means that system never sees your site. This tool checks only that access layer; it does not promise citations, rankings or traffic.
What Does AI Crawler Checker Do?
This tool checks your site's bot access rules and helps you edit them. The result is an access checklist, not a visibility or ranking measurement.
🔍 Access Check
Shows what your robots.txt rules say to the bots used by ChatGPT, Perplexity and other systems.
🤖 21 AI Bot Check
Checks access status for GPTBot, ClaudeBot, PerplexityBot, and 18 other AI bots.
📄 robots.txt Analysis
Analyzes your robots.txt file line by line for AI bot configurations.
🏷️ Meta Tag Detection
Detects hidden blocks like noai and noimageai in page-level meta tags.
📋 llms.txt Check
Verifies the existence of llms.txt, the next-gen AI SEO standard.
🛠️ File Generator
Automatically generates AI-friendly robots.txt and llms.txt files.
3-Layer Smart Analysis
Most tools only check robots.txt. But the real picture is much more complex.
1. robots.txt AI Analysis
Evaluates, from your robots.txt rules, whether 21 bots may access your site and reports "Allowed", "Blocked" or "Partial" for each. This is a simplified reading of the rules, not a measurement of the real bot's behaviour.
2. Meta Tag Check
Even if robots.txt allows access, HTML meta tags within pages can block AI bots. Tags like noai and noimageai can be automatically added by some CDNs — you might not even know it.
3. llms.txt Check
llms.txt is an optional file with a short, structured summary of your site. It can be a useful, low-maintenance summary, but Google states it does not use this file for Search visibility. Having it does not boost visibility; the tool only checks whether it exists.
Choose Your AI Strategy
Balanced (Recommended)
Allows search and user-request bots, blocks bots that harvest data for training. A reasonable default for many sites; allowing training bots does not change the score.
Open
Every listed bot is allowed; your content may also be used for model training.
Strict
Every listed bot is blocked — including Googlebot and Bingbot. This also removes you from classic search; use it only if that is really what you want.
Search Bots vs Training Bots
Getting this distinction right matters. The tool groups bots by purpose: search indexing, fetching pages on a user's request, and model training.
🔍 Search Bots
OAI-SearchBot, Claude-SearchBot, PerplexityBot and Bingbot crawl for a search index. ChatGPT-User and Claude-User fetch a page when a user asks; they are not automatic indexing bots.
📚 Training Bots
Collect your content for AI model training. Bots like GPTBot, ClaudeBot, CCBot and Bytespider harvest data; allowing them does not give you search visibility, and blocking them does not reduce it.
How It Works
Enter domain
Run analysis
See issues
Generate files
Verify access
What is AI SEO (GEO)?
Traditional SEO aims to rank high on Google. AI SEO — or GEO (Generative Engine Optimization) — aims to appear in AI-generated answers.
It's no longer about getting links — it's about being the answer. When a user asks a question and the AI references you, that's the new source of organic traffic.
Why Doesn't My Website Show Up on ChatGPT?
Most common reasons:
Security
Is Your Site AI-Ready?
See what your robots.txt and meta tags tell bots, and adjust the files if needed.
Frequently Asked Questions
Does ChatGPT crawl websites?
Yes, OpenAI's bots (GPTBot, ChatGPT-User, OAI-SearchBot) crawl websites for content access. If your robots.txt doesn't block these bots, your site can be crawled by ChatGPT.
Why is robots.txt important for AI?
robots.txt determines whether bots like GPTBot, ClaudeBot and PerplexityBot can access your site. Accidentally blocking a search bot means that system cannot crawl you; allowing access does not by itself make you visible.
What is llms.txt?
An optional file with a short, structured summary of your site. Google does not use it for Search visibility; no system guarantees ranking or recommendation because of it.
What does this tool measure?
It checks three things: what your robots.txt rules say to 21 bots, noai/noindex blocks in page meta tags, and whether an llms.txt file exists. It does not measure indexing, ranking or whether an AI answer cites you; the score is an experimental checklist.
What's the difference between AI SEO and traditional SEO?
Traditional SEO is ranking-focused. AI SEO (GEO) aims at being cited in answers. Both rest on the same foundation: accessible pages and content that actually answers the question. This tool only looks at the access side.
Who should use this?
SEO specialists, agencies, content creators and web developers who want a quick view of what their robots.txt and meta tags tell bots.