What it is
Make the file tools refuse reads outside the [working directories](/docs/en/permissions#working-directories) in every permission mode
Anthropic's own wording. Read off All settings, captured 2026-09-22.
Presence across releases
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
First cited
6The earliest release whose published evidence quoted permissions.blockReadsOutsideWorkingDirectories was v2.1.257, 1 Sep 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table above.
Names beside it
Every settings key in the inventory starting permissions, up to twelve of them.
permissionsSet allow, ask, and deny rules and the starting [permission mode](/docs/en/permission-modes) v2.1.138
permissions.additionalDirectoriesGive Claude file access to [directories outside the current one](/docs/en/permissions#working-directories) never mined
permissions.allowApprove listed [tool uses](/docs/en/permissions#permission-rule-syntax) without a prompt never mined
permissions.defaultModeSet the [permission mode](/docs/en/permission-modes#which-mode-a-session-starts-in) new sessions start in never mined
permissions.disableAutoModeSet disableAutoMode to "disable" to stop Claude Code ever falling back to auto permission mode. never mined
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.