NVIDIA rolled out Sentry on September 30, an open-source monitoring tool built into its chips that records what AI agents do. Sentry runs on network chips, not CPUs or GPUs, and sits alongside OpenShell, a containment layer for CPUs, within NVIDIA's Open Agent Safety Platform. Anthropic is implementing OpenShell, and Gecko Robotics' Komodo robot is running the platform in a military use case. OpenShell is Apache 2.0, on pace to be donated to a foundation, and has drivers letting any compute hardware plug in. OpenAI's absence from the partner list remains an open question, set against its pause on training after new disclosures and a breach of an Australian government website.