Claude Code Permission Rules Can Silently Fail, Developer Warns

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A developer discovered that several Claude Code permission rules are silently ignored or misinterpreted, creating false security assumptions in agentic workflows. Write-path rules such as Write(src/generated/**) are accepted by the system but never actually enforced, as file-path restrictions only apply to Read and Edit operations. Wildcard characters in Bash rules behave unexpectedly — for example, Bash(git * main) permits any git subcommand, including potentially dangerous ones like git push. The developer built an open-source checker tool, ccheck, to flag these silent misconfigurations in Claude Code settings files. The findings highlight that a broken permission rule and a working one look identical at runtime, making manual auditing unreliable.

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