Dispatch
Gemini API Managed Agents add pre/post tool-execution hooks, cron triggers, and a free tier
Google shipped Gemini 3.6 Flash as the default model for the antigravity-preview-05-2026 managed agent with no code changes required, and added environment hooks that run custom scripts around tool calls: pre_tool_execution can block a call with a denial reason, post_tool_execution can enforce validation such as linting, both with regex matchers and command-line or HTTP handlers. Also new: a max_total_tokens budget cap with resumable interactions, cron-based scheduled triggers, an Environments API for programmatic sandbox management, and free-tier access. AI investment bank OffDeal is cited using post-execution hooks for pixel-level logo validation before deck publication.
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