Bug: Write tool permissions do not match paths outside the project directory
증상
The Write tool permission system does not reliably auto-approve writes to paths outside the project directory, regardless of the permission pattern format used. This forces users to manually approve every write to external paths, even when explicit allow rules are configured.
원인
Environment variable, configuration file, or initialization parameter missing, malformed, or incorrectly scoped.
해결법
We use a PreToolUse hook on Write that checks if the file path contains claude-task- and returns permissionDecision: "allow":
{
"hooks": {
"PreToolUse": [{
"matcher": "Write",
"hooks": [{
"type": "command",
"command": "jq -r 'if .tool_name == \"Write\" and (.tool_input.file_path | test(\"claude-task-\")) then {\"hookSpecificOutput\":{\"hookEventName\":\"PreToolUse\",\"permissionDecision\":\"allow\"}} else {} end'"
}]
}]
}
}
This works but is heavyweight for what should be a simple permission rule.
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/anthropics/claude-code/issues/38391
Source: https://github.com/anthropics/claude-code/issues/38391
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