Metlo API Security

Metlo API Security is an open-source platform that provides comprehensive protection for your API infrastructure. It works by passively monitoring your API traffic to build a complete inventory of all endpoints while simultaneously detecting and blocking malicious activity. The system identifies threats like SQL injection, cross-site scripting, brute force attacks, and unauthorized data access across your entire API surface.

The platform uses pattern-based detection models that analyze requests across multiple interactions to minimize false positives. It offers over 25 built-in detection rules and allows for custom rule creation. Metlo operates with minimal performance impact, adding less than 0.2ms of latency while processing billions of API calls. It integrates with various programming languages including Node.js, Python, Go, and Java, as well as infrastructure components like Nginx, Kubernetes, and major cloud platforms.

Development and security teams benefit from Metlo's ability to automatically map sensitive data flows, identify unauthenticated endpoints, and generate OpenAPI specifications. The tool provides real-time blocking capabilities at IP, session, and user levels, making it suitable for organizations that need to secure their APIs without sacrificing performance or requiring extensive configuration time.