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  4. Bot Management variables

Bot Management variables

​​ Firewall fields

Bot Management provides access to several new variables within the Firewall expression builder.

  • Bot Score (cf.bot_management.score): An integer between 1-99 that indicates Cloudflare’s level of certainty that a request comes from a bot.
  • Verified Bot (cf.bot_management.verified_bot): A boolean value that is true if the request comes from a good bot, like Google or Bing. Most customers choose to allow this traffic. For more details, see Traffic from known bots.
  • Serves Static Resource (cf.bot_management.static_resource): An identifier that matches file extensions for many types of static resources. Use this variable if you send emails that retrieve static images.
  • ja3Hash (cf.bot_management.ja3_hash): A JA3 Fingerprint helps you profile specific SSL/TLS clients across different destination IPs, Ports, and X509 certificates.
  • Bot Detection IDs (cf.bot_management.detection_ids): List of IDs that correlate to the Bot Management heuristic detections made on a request (you can have multiple heuristic detections on the same request).

​​ Workers variables

These variables are also available as part of the request.cf object via Cloudflare Workers:

  • request.cf.botManagement.score
  • request.cf.botManagement.verifiedBot
  • request.cf.botManagement.staticResource
  • request.cf.botManagement.ja3Hash
  • request.cf.botManagement.js_detection.passed
  • request.cf.botManagement.detectionIds

​​ Log fields

Once you enable Bot Management, Cloudflare also surfaces bot information in its HTTP requests log fields:

  • BotDetectionIDs
  • BotScore
  • BotScoreSrc
  • BotTags