NVIDIA donates Agent Substrate to CNCF Sandbox

Agent Substrate is an open-source, zero-trust runtime donated to the Cloud Native Computing Foundation Sandbox that multiplexes AI agent sessions over a small pool of worker Pods to achieve high density and fast resumption. By checkpointing and restoring idle sessions complete with memory and filesystem state, the runtime avoids the multi-second cold starts and resource waste of standard Kubernetes Pods. The project is designed to support workloads such as coding assistants, reinforcement learning post-training, and GPU sandboxes, and it integrates with NVIDIA Dynamo for KV-cache-aware inference routing. Open article →