Unclear What the shortcut does when the server sends no value for its switch is not known.
What
Hooks are your own commands that run when certain events happen, and some of them check a tool before it runs. Claude Code has a shortcut that skips the usual handling of those checks when every remaining hook is a security hook. That shortcut now also depends on a switch controlled from Anthropic's servers.
Setting the environment variable CLAUDE_CODE_DISABLE_LONE_SEC_DEFAULT_SHORTCUT still turns the shortcut off.
Why
This changes which tool-checking hooks actually run in the plugin runtime. If you rely on every one of those hooks running, set the environment variable.
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What the shortcut does when the server sends no value for its switch is not known.