Antigravity Agent (Gemini Managed Agents) changelog

Antigravity agent 09-2026 changes built-in tools, 05-2026 shuts down October 5

Google released antigravity-preview-09-2026, replacing antigravity-preview-05-2026. Tool parameters move to PascalCase and file edits use line-range replacements. The 05-2026 version shuts down on October 5, 2026.

Who is affected:

Apps that run the Antigravity agent with local tools or that parse its function_call steps.

Action needed:

Update the agent string and adapt any code that handles the built-in tool calls.

Gemini API launches Managed Agents and the Antigravity agent in preview

Google launched Managed Agents in the Gemini API in public preview and released the general-purpose Antigravity agent, antigravity-preview-05-2026, which plans, writes and runs code, manages files and browses the web inside a Google-hosted sandbox.