LlamaFirewall is an open-source, system-level guardrail system designed to mitigate critical security risks in autonomous AI agents, such as prompt injection, goal misalignment, and insecure code generation. Serving as a final layer of defense, it employs three core guardrails: **PromptGuard 2** detects direct jailbreaks, **AlignmentCheck** audits agent chain-of-thought for subtle misalignment and indirect injections, and CodeShield performs fast, real-time static analysis to

The Hierarchical Surgical Robot Transformer (SRT-H) brings step-level autonomy to surgery by combining a language-driven high-level planner with a vision-guided low-level executor. Trained on over 16,000 demonstrations, it completed the clipping-and-cutting phase of gallbladder removal with 100% success in ex-vivo trials, adapting to variations and self-correcting without human intervention—marking a milestone toward clinically viable autonomous surgery.