This is a submission for the Google I/O 2026 Challenge: Explore Google I/O 2026

Google shipped a lot of developer tooling at I/O 2026. The thing I want to actually build with is Managed Agents in the Gemini API.

Here's the pitch: one API call provisions a fully-functional agent with a remote execution sandbox. No infrastructure setup. No managing cloud VMs. No configuring the Antigravity agent harness manually. You write the agent logic. Google handles the environment.

This guide walks through what Managed Agents actually are, how they differ from the existing Gemini API, and how to get something running.

The Problem Managed Agents Solve