hook-development

Claude Code hooks automate validation and policy enforcement through event-driven scripts. You can define PreToolUse and PostToolUse hooks in hooks.json to intercept actions and enforce safety checks automatically.

Claude Code hooks are self-contained, event-driven automation tools for plugins. You need them to enforce policies, load context, and automate workflows without writing bespoke scripts for every project.

Setting up a hook in hooks.json involves defining the event type, such as SessionStart or Stop, and specifying the prompt-based or command-based action. Test the hook in Claude Code to validate safety checks.

Both prompt-based and command-based hooks are supported for workflow automation in Claude Code. This allows you to combine natural language guidance with deterministic scripts for comprehensive event-driven operations.

Claude Code hook automation scales for frontend projects by supporting advanced multi-event workflows. The extensible structure provides patterns and best practices that grow from quick checks to complex automation.

Hooks not triggering often indicates incorrect event mapping in hooks.json or unsupported event types. Ensure your hook targets valid events like PreToolUse, PostToolUse, Stop, or SessionStart and follows YAML frontmatter requirements.