Introduction Claude Code hooks are user-defined shell commands that execute at various points in Claude Code’s lifecycle. Hooks provide deterministic control over Claude Code’s behavior, ensuring certain actions always happen rather than relying on the LLM to choose to run them. Example use cases include: Notifications: Customize how you get notified when Claude Code is awaiting your input or permission to run something. Automatic formatting: Run prettier on .ts files, gofmt on .go files, etc. a...