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Claude Code's CLAUDE.md rules often ignored, hooks more effective: user test

A user conducted an experiment to test the effectiveness of CLAUDE.md instructions versus code hooks in guiding the behavior of Claude Code 2.1.246. The experiment involved 48 trials, with the user's initial hypothesis being that CLAUDE.md rules would be ignored while hooks would be enforced. However, the results indicated that Claude Code frequently attempted to use banned tools like `sed` even when instructed not to in CLAUDE.md, suggesting that hooks are more reliable for enforcing specific constraints. AI

IMPACT Highlights potential unreliability of instruction files for AI agents, suggesting code hooks may be a more robust method for enforcing desired behaviors.

RANK_REASON User-conducted experiment and analysis of an AI product's behavior.

Read on dev.to — Claude Code tag →

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

Claude Code's CLAUDE.md rules often ignored, hooks more effective: user test

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11 / 100
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User-conducted experiment and analysis of an AI product's behavior.
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product, other
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COVERAGE [1]

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

    I pitched hooks because "CLAUDE.md gets ignored." Then I measured it — 48 trials.

    <p>In March I published a post on here called<br /> <a href="https://dev.to/yurukusa/your-claudemd-rules-arent-being-enforced-heres-what-actually-works-3aa8">Your CLAUDE.md Rules Aren't Being Enforced</a>.<br /> I publish a free collection of Claude Code safety hooks and sell a b…