Phase 2: Static Analysis & Automated Gates · 50 min · Python · Claude Code Hooks · pre-commit

Hook-Based Real-Time Verification

Don't review the bad code. Stop it from being written.

Real-world application: Engineers who can implement hook-based real-time verification (PostToolUse interception, pre-emptive blocking) demonstrate the ability to shift quality gates left -- from post-hoc review to pre-emptive blocking, which is the frontier of AI code quality engineering.

What you will learn

Implement PostToolUse hooks that intercept AI tool calls before code is written
Configure pre-commit hooks that block AI-generated code with linting violations
Distinguish pre-emptive blocking from post-hoc review and explain the tradeoffs
Build a real-time verification layer that runs inside the AI coding loop

Introduction

Hook-Based Real-Time Verification

Objective

Run the hook-based verification simulation showing the AI coding loop with PostToolUse hooks. Observe how the AI self-corrects through hook feedback across multiple iterations.

Don't review the bad code. Stop it from being written.

Unlock the full lesson

You've read the first 2 sections. The rest of this lesson covers The Problem, The Concept, Build, Check Yourself, Key Terms & Next — plus a hands-on lab, quiz, and project artifact.

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