Adrian

Adrian is an open-source runtime security tool designed to monitor and control AI agents. It detects and blocks malicious tool usage, prompt injection attacks, and policy drift in real time, before the agent takes action, providing an additional layer of defense for AI-powered workflows. The key advantage is its open-source nature, which allows free adoption and customization. By operating at runtime, it offers immediate threat detection without slowing down development. However, as a new project with no visible GitHub community or production track record, its reliability and coverage against sophisticated attacks remain unproven. Users should be aware of potential false positives and the need for manual tuning. Deployment is self-hosted and free of licensing costs, but it requires technical expertise to integrate and maintain. The tool likely runs as a proxy or middleware, so it may introduce latency or resource overhead. Detailed documentation and support are currently limited. Adrian is most suitable for security-conscious developers and teams exploring runtime protection for AI agents in test or staging environments.