Google Antigravity retires its May agent today; migrate or it breaks
The antigravity-preview-05-2026 ID stops working after today. The 09 successor renames tools, uses PascalCase args, and does line-range file edits.
Copy markdown
The May agent ID stops working after today
Google retires the antigravity-preview-05-2026 agent on Oct 5; move to antigravity-preview-09-2026. If you only consume remote agent output, swapping the agent ID is the whole migration—everything else is unchanged for you.
Local tool handlers and parsers need real changes
The September successor renames tools, switches arguments to PascalCase, and returns line-range file edits instead of full-file rewrites. If you run local tool handlers or a function_call parser, update their shapes and regression-test before the old ID goes dark.