CYBERTOOLS / 0x27
[SYS_NODE: 0x27 // CRAWLER GATEKEEPER]

ROBOTS.TXT COMPILER & GATEKEEPER

Construct, validate, and compile RFC 9309 compliant robots.txt policy files. Selectively allow search crawlers (Google, Bing), block AI training scrapers (GPTBot, ClaudeBot, CCBot), configure crawl delays, and append XML sitemap pointers.

SECURITY PROFILES:
GLOBAL DIRECTIVES
[SITEMAP & CRAWL DELAY]
ADD CRAWLER RULE BLOCK
[USER-AGENT BLOCK]
CONFIGURED AGENT BLOCKS (0)
COMPILED ROBOTS.TXT OUTPUT 

      


    


    
    

      

        

          ROBOTS EXCLUSION PROTOCOL (RFC 9309) & AI SCRAPER MITIGATION
        

        

          Technical specifications for crawler directive evaluation, wildcard regex syntax, artificial intelligence scraping defenses, and client privacy.
        

      


      

        
1. Evaluation Order & Precedence

        

          Under the formalized IETF standard (RFC 9309), crawlers parse user-agent blocks by first identifying the most specific matching User-agent identifier. If no specific agent block matches the crawler's identity, the generic wildcard block (User-agent: *) is evaluated. Within a block:
        

        
    
          
  • The longest matching path rule takes precedence over shorter rules.
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  • If an Allow and a Disallow rule match the exact same character length, Allow takes precedence.
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  • Wildcards (*) match zero or more characters; the dollar symbol ($) denotes strict end-of-URL termination.
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2. AI Scraper & LLM Training Bot Defenses

        

          Modern LLM data harvesting pipelines operate dedicated user agents distinct from search engine indexing crawlers:
        

        

          

            GPTBot & ChatGPT-User
            Harvests data for OpenAI model training and real-time ChatGPT browsing retrieval.
          

          

            ClaudeBot & anthropic-ai
            Web crawlers operated by Anthropic to train Claude generative foundation models.
          

          

            CCBot (Common Crawl)
            Massive open web scraping repository consumed by dozens of foundation model researchers.
          

        

      


      

        

          1. Airgap Client Sandboxing
          Executed 100% locally in your browser. No domain paths, sitemap endpoints, or internal URLs leave your workstation.
        

        

          2. Case Sensitivity Guard
          Standard directives (User-agent, Disallow, Sitemap) are verified for exact case compliance.
        

        

          3. Instant Server Root Export
          Download ready to be placed directly into web server document root (/robots.txt).