Procaptcha
Establish trust on every request with risk-based verification that welcomes real users and AI agents while stopping abusive bots. Minimizes friction for legitimate traffic.
Procaptcha is an open-source alternative to:
Prosopo is a bot and agent trust management platform that provides real-time, risk-based verification to distinguish between legitimate users, AI agents, and malicious bots. By scoring intent on every request, Prosopo applies verification only when necessary, reducing friction for real traffic while blocking abusive automation.
Key Features
- Risk-based verification: Scores intent of every request (human, AI agent, or bot) and applies verification only when risk thresholds are exceeded
- Adaptive protection: Evaluates behavior in real-time to deliver invisible CAPTCHA and adaptive protection
- Multi-format deployment: Available as Procaptcha (form), Protect (site/app), Spam Filter, and Residential Proxy Detection
- Framework integrations: Drop-in integration with WordPress, React, Vue, Angular, Cloudflare Workers, and AWS Lambda@Edge
- Use case coverage: Protects against scraping, credential stuffing, account takeover, ticket scalping, ad fraud, and more
- GDPR compliance: Ensures data protection and privacy compliance for EU users
- Enterprise-ready: Scalable solution for businesses of all sizes with no credit card required for trial
Tech / Self-Hosting
Prosopo is a cloud-based service with no self-hosting option. The platform is designed for easy integration into existing stacks through APIs and SDKs, with comprehensive documentation available for developers.