Tailor Gemini CLI to your workflow with hooks- Google Developers Blog

Introduces Gemini CLI hooks, a mechanism for executing custom scripts at specific points in the Gemini CLI's lifecycle (e.g., BeforeTool, AfterAgent). This allows for customization of agent behavior, such as adding context, validating actions, enforcing policies, logging, and sending notifications. A concrete example demonstrates a `BeforeTool` hook for automated secret scanning using a shell script and JSON input/output. Hooks can be bundled within Gemini CLI extensions and are enabled by default in v0.26.0+.