Google AI Studio launched an updated Managed Agents harness in the Gemini API. antigravity-preview-09-2026 is live in the Interactions API and AI Studio, giving agents isolated Linux execution, filesystem tools, web search, persistent environments, and MCP connectivity. The release also adds Files and Credentials APIs so developers can move artifacts between turns and connect external services without putting secrets in the model context.

Key Takeaways

  • ✓antigravity-preview-09-2026 is live in the Interactions API and AI Studio, using Gemini 3.8 Flash by default with configurable models.
  • ✓Managed agents run in persistent isolated Linux sandboxes with code execution, filesystem, web-search, and MCP tools.
  • ✓Files handles artifact transfer while Credentials supports scoped bearer, environment-variable, and OAuth2 access without exposing plaintext secrets to the model.
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