Google Open-Sources Agent Substrate to Sandbox AI Agents Without Runaway Compute Costs

Google has released Agent Substrate, an open-source system for sandboxing AI agents that write code, run tools, or drive browsers. The project is designed to give each agent hard isolation boundaries while controlling compute spend, since agents often sit idle between tasks. The announcement was made around KubeCon.

Why it matters: Teams deploying agents in production need isolation that doesn't inflate cloud bills, and this open-source option gives them a concrete architecture to evaluate.