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Claude Code removes the dedicated file search tool, switches to Bash, and breaks hierarchical user permission approvals.

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ME News, on April 23 (UTC+8), according to Beating monitoring, Claude Code has removed the dedicated Grep (text search) and Glob (filename matching) tools starting from version 2.1.117, with all file operations now performed through Bash. Bash is a general-purpose command-line tool that can do far more than just search files, including high-risk operations such as deletion, modification, and software installation. Anthropic engineer Adam Wolff said the change is faster, stating, “It took four months to remove these tools; removing is harder than adding.” Amp Code CEO Quinn Slack pointed out that this change breaks the existing permission management logic. Previously, users could set permissions by tool type: read-only tools like Grep and Glob were automatically allowed, while Bash commands required manual approval one by one. Now that all operations go through Bash, this tiered approval system is invalidated: users must either approve every shell command individually (extremely inefficient) or allow all commands (losing security control). Slack believes this exposes a more fundamental problem: using deterministic rules to manage agent permissions does not work. Models can bypass classifications with various equivalent expressions, such as using bash(grep query | head -n 10) instead of the dedicated search tool, or inline calls to sed, perl, or python to execute arbitrary operations. He said the Amp team tried to automatically parse Bash commands to determine security, “which could reduce approvals by about half, but the remaining amount is still too many.” (Source: BlockBeats)
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