Extending with MCP & Hooks

Hooks for Automation

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LearnStep 1 of 3

The Hook Lifecycle

Learning Objectives

•Understand hook lifecycle
•Create validation hooks
•Configure formatting hooks

Lesson Outline

LearnStep 1/3

The Hook Lifecycle

Intercepting Claude's Actions

Hooks allow you to run custom code at specific points in Claude's workflow:

PreToolUse: Before a tool executes (great for safety checks)
PostToolUse: After a tool completes (great for formatting)
Notification: For logging and monitoring

Configuration Example

json

In this example, every time Claude writes a file, Prettier automatically formats it.