CrawlerSim - Search Engine Simulator

AI Bot Access Testing Tool - Check Your `robots.txt`

Verify if your website allows or blocks access to major AI crawlers. Ensure your `robots.txt` rules are correctly configured for bots like GPTBot, ClaudeBot, and Google-Extended.

Test 12+ AI Bots
Instant `robots.txt` Analysis
Ensure AI Visibility

Select AI Bots:

Enter a URL and select bots to check their access rights.

Why Use Our AI Bot Checker?

Ensure your content is accessible to the AI models you want, and restricted from those you don't.

Control Your Content

Verify that your `robots.txt` rules are correctly blocking or allowing AI crawlers, preventing unauthorized data scraping for model training.

Maximize AI Visibility

Ensure that beneficial bots like Google-Extended and PerplexityBot can access your site to include your content in AI-powered search results.

Instant, Accurate Results

Our tool directly fetches and parses your live `robots.txt` file, giving you the most accurate and up-to-date access status for each bot.

Trusted by Publishers & Developers

15,000+
`robots.txt` Files Checked
12+
AI Bots Supported
99.9%
Parsing Accuracy

How It Works

Check your AI bot access in three simple steps.

1

Enter Your URL

Provide the homepage URL of the website you want to test.

2

Select AI Bots

Choose which AI crawlers you want to check access for.

3

Get Instant Results

See a clear table showing whether each bot is allowed or disallowed by your `robots.txt` file.

Perfect For

Content Publishers

Protect your intellectual property from being used for AI model training without your consent.

SEO Professionals

Audit client sites and ensure they are correctly configured for the new wave of AI-driven search.

Web Developers

Debug `robots.txt` files and confirm that your rules are being interpreted as expected by AI crawlers.

Business Owners

Understand and control how your brand and website content are being utilized by AI technologies.

Frequently Asked Questions

What is a `robots.txt` file?

A `robots.txt` file is a text file located at the root of a website that tells web crawlers (like search engine bots and AI bots) which pages or files the crawler can or can't request from your site.

Why is it important to check for AI bot access?

Many AI models are trained on vast amounts of data scraped from the web. Your `robots.txt` file is the primary way to signal whether you permit AI companies to use your content for model training. It also ensures that bots powering AI search answers can access your content.

Do bots have to follow `robots.txt` rules?

Reputable bots (like those from Google, OpenAI, etc.) will generally respect `robots.txt` directives. However, it is a voluntary protocol. Malicious bots or scrapers will often ignore it. This tool checks how well-behaved bots will interpret your rules.

Ready to Secure Your Content?

Run a free and instant check to ensure your `robots.txt` is correctly configured for the age of AI.

Understanding AI Bot Access and `robots.txt`

The `robots.txt` file is a powerful tool for webmasters to guide the behavior of web crawlers, including the new generation of AI bots from companies like OpenAI, Google, and Anthropic. These bots crawl the web to gather data for training large language models (LLMs) and to provide real-time information for AI-powered search results.

Controlling which bots can access your site is crucial for several reasons. You may want to prevent your proprietary content from being used to train commercial AI models without compensation. Conversely, you may want to ensure that bots powering search features (like those from Perplexity or Google) can access your content so it appears in their results.

How This Tool Really Works

Our AI Bot Access Testing Tool simplifies the process of verifying your `robots.txt` rules. Here’s a breakdown of the process:

  • Fetches `robots.txt`: The tool finds and reads the `robots.txt` file from the root of the domain you enter.
  • Parses the Rules: It interprets the `User-agent`, `Allow`, and `Disallow` directives in the file.
  • Checks Specific Bots: For each AI bot you select, the tool checks for rules that apply specifically to that bot's user agent.
  • Applies Wildcard Rules: If no specific rule is found for a bot, the tool checks the rules for the wildcard user agent (`*`).
  • Reports Status: The final result shows whether each bot is effectively "Allowed" or "Disallowed" based on the most specific matching rule.

Remember, if a `robots.txt` file doesn't exist, or if it has no rules that apply to a bot, the default behavior is to allow access.

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