AI Crawler Control (robots.txt)

Generate robots.txt rules to allow or block AI crawlers — GPTBot, ClaudeBot, PerplexityBot, Google-Extended and more — with per-bot context.

100% Browser-Based • Local Processing
Start from a preset

Anything left on “—” is simply not mentioned in the file, which means it keeps whatever your existing robots.txt already says.

2 · Paths to keep blocked

robots.txt rules

Blocking training is not the same as blocking answers. Keeping your content out of model training costs you nothing in search. Blocking an answering crawler takes you out of that engine’s cited AI answers — the opposite of what GEO is for.

Output

Append this to your existing robots.txt — it is a set of groups, not a whole file, so there is no download button to save it over one by mistake. Naming a bot gives it its own group, and a group does not inherit your User-agent: * rules: anything you disallow for everyone must be repeated above, or the bots you list here will crawl it. These directives are voluntary, not a security control, and vendors add and rename crawlers — re-check the tokens against their docs from time to time.

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🔒 Local Processing. Your site data never leaves your device.

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🌐 Fully Client-Side. Runs instantly in your browser.

No Signup

⚡ No accounts. No API keys. Just open and use.

Browser Based

🚀 No installs, no crawlers, no site verification.

Overview

What is a AI Crawler Control (robots.txt)?

AI Crawler Control generates robots.txt rules to allow or block AI crawlers — GPTBot, ClaudeBot, PerplexityBot, Google-Extended, CCBot and others — using each bot's documented user-agent token. Choose which to permit or disallow and it outputs a robots.txt block. It lets you decide whether AI engines may use your content for training and answers, a key GEO governance choice.

AI companies run crawlers that read websites to train models and to answer user questions with citations. You may want some to access your site (for visibility in AI answers) and others blocked (to keep content out of training). robots.txt is where you express that, per bot.

This tool lists the known AI crawlers with their current user-agent tokens and short context, and builds the robots.txt rules from your choices. It runs entirely in your browser, and the output is yours to add to your robots.txt.

Guide

How to control AI crawlers

Step 1: Review the list of AI crawlers and what each is used for (training vs answering)

Review the list of AI crawlers and what each is used for (training vs answering).

Step 2: Set each to Allow or Disallow based on whether you want that AI to use your content

Set each to Allow or Disallow based on whether you want that AI to use your content.

Step 3: Copy the generated robots.txt block and add it to your site's robots.txt

Copy the generated robots.txt block and add it to your site's robots.txt.

Details

Training vs answering — and what blocking really does

AI crawlers fall into roughly two purposes, and the distinction shapes your decision. Some fetch content primarily to train models (for example OpenAI's GPTBot, Anthropic's ClaudeBot/anthropic-ai, CCBot from Common Crawl, and Google-Extended, which governs use in Google's AI/Gemini training); others fetch in real time to answer a user's question with a citation (such as ChatGPT-User, OAI-SearchBot, and PerplexityBot). Blocking a training crawler keeps your content out of that model's training data but does not remove you from search results — importantly, Google-Extended controls AI/Gemini training only and has no effect on normal Google Search indexing, which still uses Googlebot. Blocking an answering crawler, by contrast, can keep you out of that engine's cited AI answers — which may reduce your AI-search visibility, the opposite of GEO. So the choice is strategic: allow answering bots if you want to appear in AI Overviews, ChatGPT, and Perplexity citations; block training bots if you'd rather your content not feed model training. Two honest caveats: these directives are voluntary — well-behaved bots respect them, but compliance isn't guaranteed and isn't a security control — and AI companies add and rename crawlers over time, so revisit your rules periodically. The tool uses each bot's documented token; everything runs locally in your browser. For general crawl rules, use the Robots.txt Generator.

Support

Frequently Asked Questions

What is an AI crawler?

An AI crawler is a bot run by an AI company that reads web pages — either to gather data for training a language model, or to fetch content in real time to answer a user's question with a citation. Examples include OpenAI's GPTBot, Anthropic's ClaudeBot, and PerplexityBot. You can allow or block them in robots.txt.

How do I block AI crawlers like GPTBot?

Add a robots.txt rule targeting the bot's user-agent token with a Disallow, e.g. 'User-agent: GPTBot / Disallow: /'. This tool generates these rules for all the known AI crawlers at once from your allow/block choices, so you don't have to look up each token. Add the result to your robots.txt at your site root.

Will blocking AI crawlers remove me from Google Search?

No. Normal Google Search indexing uses Googlebot, which is separate from AI-training crawlers. In particular, Google-Extended controls only whether your content is used for Google's AI and Gemini training — blocking it has no effect on your regular Search rankings. Don't confuse AI-crawler control with search indexing.

What's the difference between training and answering crawlers?

Training crawlers (GPTBot, ClaudeBot, CCBot, Google-Extended) collect content to train models; answering crawlers (ChatGPT-User, OAI-SearchBot, PerplexityBot) fetch pages live to cite them in AI answers. Blocking training bots keeps you out of model training; blocking answering bots can keep you out of AI-answer citations — usually the opposite of what you want for visibility.

Should I block or allow AI crawlers?

It's a strategic choice. Allow answering crawlers if you want your content to appear and be cited in AI Overviews, ChatGPT, and Perplexity (a GEO goal). Consider blocking training crawlers if you'd prefer your content not feed model training. Many sites allow answering bots and decide on training bots case by case.

Do AI crawlers actually obey these rules?

Reputable AI companies document their crawler tokens and state they respect robots.txt, but compliance is voluntary, not enforced — a crawler can ignore it, and robots.txt is not a security measure. Treat these rules as a clear statement of preference that responsible bots follow, and revisit them as companies add or rename crawlers.

Is it free, and do I need to sign up?

Yes, it's completely free with no account, no trial, and no limit on how many times you use it. Unlike most SEO suites, there's no login wall — it runs entirely in your browser, so you just open the page and use it.

Is my data private?

Yes. Everything is processed in your browser — whatever you type or paste is never sent to a server. Nothing is stored once you close the tab, so your URLs, content, and site details stay on your own device. That client-side approach is the core difference from cloud SEO tools.

Does it work on mobile?

Yes. It runs in your phone's browser with nothing to install, so you can generate or check markup on Android or iOS. The layout adapts to small screens, though pasting longer code is easier on a desktop.

Does it work offline?

Once the page has loaded, the work runs entirely on your device, so it keeps working without a connection. You only need to be online to open the page the first time — which is also why nothing you enter is uploaded.

Can I copy the output?

Yes. You can copy the generated code or results to your clipboard with one click, ready to paste straight into your site's HTML, CMS, or files. Because everything runs locally, copying is instant with no upload step.

Will this directly improve my rankings or get me into AI answers?

It produces correct, standards-compliant markup that helps search engines and AI engines (Google, AI Overviews, ChatGPT, Perplexity) understand your page clearly — which is a prerequisite for ranking and being cited. But it doesn't directly change rankings or guarantee a rich result or AI citation; those are decided by the engines based on your overall content and authority.

Still have questions?

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