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Anthropic's Claude Code adds PreToolUse hook for tool call inspection

By PulseAugur Editorial · [1 sources] ·

Anthropic's Claude Code now supports a PreToolUse hook, a script that runs after Claude generates tool parameters but before the tool call executes. This hook allows developers to inspect and control tool usage, enabling them to deny or escalate specific commands. The hook receives JSON input detailing the tool call, including the command and its description, and can respond by printing a JSON deny object or exiting with a specific code to block the action. This feature is particularly useful for preventing risky commands, such as `rm -rf`, by implementing custom blocklists. AI

IMPACT Enhances developer control over AI tool execution, allowing for custom safety and permission logic.

RANK_REASON This is a feature update for a specific tool (Claude Code), not a core model release or significant industry event.

Read on dev.to — Claude Code tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Anthropic's Claude Code adds PreToolUse hook for tool call inspection

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Signal score
30 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
This is a feature update for a specific tool (Claude Code), not a core model release or significant industry event.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
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product
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AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
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Breaking (< 6h)
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Full methodology in our editorial standards.

COVERAGE [1]

  1. dev.to — Claude Code tag TIER_1 English(EN) · Aoba Works ·

    Claude Code PreToolUse Hook: Copy-Paste Block Scripts

    <p><em>Originally published at <a href="https://en.aobaworks.com/claude-code-pretooluse-hook-copy-paste-block-scripts/?utm_source=devto&amp;utm_medium=referral" rel="noopener noreferrer">Unattended</a>.</em></p> <p>A Claude Code PreToolUse hook is a script that inspects each tool…

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