NVIDIA says Agent Substrate joins CNCF Sandbox for shared agent infrastructure

NVIDIA says Agent Substrate has been donated to the Cloud Native Computing Foundation Sandbox as an open-source runtime for isolated AI agent environments. The system shares a pool of Kubernetes worker pods among sessions instead of reserving a pod for every agent. When an agent becomes idle, the runtime saves its memory and filesystem state and frees the worker. It restores that state onto an available worker when activity resumes, avoiding a new Kubernetes scheduling cycle for each step. NVIDIA claims 10x higher density than standard containers. The project remains under development: its APIs are changing, GPU support is being rebuilt, and parts of its integration with NVIDIA Dynamo are experimental.