Gemini Spark Agents: One API Call, One Cloud Sandbox

Gemini Spark is the reason your feed is full of screenshots of an agent that keeps working after the laptop lid is shut. Google shipped it as an always-on assistant that lives on a Google Cloud VM, wakes up on a schedule, and finishes multi-step jobs on your behalf. The part most people missed is that the same runtime is exposed to developers as the Managed Agents API on the Gemini API, and it is delightfully small to drive from Python.

A single call to the Interactions API provisions a fresh Linux sandbox, runs a full agent loop inside it (reasoning, code execution, file management, web browsing), and hands you back the result. You do not stand up a container, you do not wire a tool router, and you do not babysit a message loop. That is the whole pitch: the harness is Google's problem, the task is yours.