Google updates Gemini managed agents with Files and Credentials APIs
Original titleManaged Agents in the Gemini API: an updated agent harness, a Files API, and managed credentials
AISummary
Google AI Studio released antigravity-preview-09-2026, an updated harness for Gemini managed agents, now live in the Interactions API and AI Studio and running on Gemini 3.8 Flash. The release adds a Files API for moving data into and out of the agent's sandbox and a Credentials API that stores secrets encrypted so the model never sees them.
AIWhy it matters
The post shows what changed in the agent harness and how the new Files and Credentials APIs keep secrets out of the model's context, useful for developers building agents.
Source: Google AI Studio · x.com