create-hooks

Claude Code hooks use event-driven automation to intercept tool calls. You define PreToolUse and PostToolUse matchers to validate commands, enforce safety checks, and execute automated actions before or after tool interactions occur.

Claude Code hooks are event-driven scripts that automate, validate, and govern tool interactions. You need them to enforce safety checks, block dangerous commands, or log activities for auditing during workflows like SessionStart or UserPromptSubmit.

Set up validation checks by creating a PreToolUse hook that evaluates command inputs against safety rules. The hook uses input/output contracts to block dangerous commands and log activities before execution proceeds.

Yes, you can compose multiple hooks in sequences to chain validations and actions. This event-driven workflow automation improves reliability by ensuring checks execute in a defined order across tool interactions.

Without a clear blueprint for events, matchers, and input/output contracts, creating robust hooks is complex, tedious, and error-prone. Properly defining hook types and safety checks is required to build reliable, auditable automation.