Скачать или смотреть Hooks and Permissions - Claude Agent SDK Course | Part 5

Learn how to use hooks in the Claude Agent SDK with TypeScript to intercept and control agent tool execution at runtime. This tutorial demonstrates how to implement PreToolUse and PostToolUse hooks to detect when Claude attempts to use tools like Bash, Read, Write, and Edit, then accept, reject, or redirect those tool calls based on your custom logic. You’ll discover how to create hook callback functions that receive tool name and input data, use HookMatcher patterns to target specific tools or match all tool usage, return permission decisions to allow or deny tool execution, add custom validation logic before tools run, and modify tool behavior without changing Claude’s core functionality. Whether you’re building AI agents that need command validation, file access control, or custom tool routing logic, this guide shows you how to leverage the Claude Agent SDK’s lifecycle hooks to intercept every tool request at the PreToolUse stage, inspect tool parameters and context, and programmatically control what gets executed using hook callbacks and decision outputs in TypeScript.

0:00 - Intro
0:34 - Project Overview
1:37 - Creating our first hook
3:33 - Running the project

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