How Gemini Managed Agents Works under the Hood

This article provides an in-depth technical overview of how Gemini Managed Agents operate under the hood. It details the execution loop, from sending a prompt to the API, booting an isolated Linux sandbox, loading skills, and the model reasoning and using tools iteratively until task completion. The article covers the architecture including the orchestrator, Gemini 3.5 Flash model, and code execution in a secure VM. It also explains how environments persist across interactions, allowing stateful agent workflows. Aimed at developers and tech enthusiasts, it clarifies that the API does more than a single model call—it orchestrates a full agentic process.