ALTCHA Sentinel Features

ALTCHA Sentinel is designed to provide advanced, intelligent protection for web services and applications — going far beyond the capabilities of traditional CAPTCHAs or basic proof-of-work systems. Built with privacy and scalability in mind, Sentinel helps secure mission-critical systems while ensuring full compliance with data privacy regulations through self-hosting and local data residency.

Key Features

• Autopilot
  Automatically adjust challenge difficulty and response policies based on traffic patterns and threat levels, reducing manual configuration and maintenance.
• Adaptive Captcha
  Serve intelligently tailored challenges that balance user experience with security, dynamically adjusting based on risk signals.
• Classifier
  Analyze text and contextual data using NLP and machine learning to detect spam and assign a legitimacy score, enabling automated, intelligent content moderation.
• IP Resolution
  Reveal important details that help Sentinel determine whether the traffic is legitimate or malicious.
• Language Detection
  Enables fast and accurate identification of the language used in any given text.
• Links and Redirects
  Protect any URL with a verification page before redirecting users to the destination.
• Rate Limiters
  Enforce flexible, context-aware rate limits at multiple layers of your application stack to prevent abuse without affecting genuine users.
• Similarity and Training Data
  Compare input text against example sets to identify patterns, detect spam or harmful content, and enforce quality standards—ideal for moderating chats, forums, and social platforms.