This guide explains how to troubleshoot issues with Claude Code hooks, which are custom scripts designed to automate actions or enforce policies within the Claude Code environment. It details steps to verify if a hook is loaded by checking the `/hooks` command and examining the correct settings file, noting that hooks can merge from multiple sources. The guide also covers scenarios where a loaded hook fails to execute, attributing this to case-sensitive matchers, incorrect event triggers (PreToolUse vs. PostToolUse), or non-interactive mode limitations for PermissionRequest hooks. A critical failure mode discussed is the exit code trap, where an exit code of 1 does not block actions, unlike the required exit code of 2 for policy enforcement, with specific exceptions and behaviors noted for different hook events and versions. AI
IMPACT Provides detailed technical guidance for developers using Claude Code's hook system to automate workflows and enforce policies.
RANK_REASON The item is a technical guide for using a specific feature of a software product.
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