CLAUDE_CODE_FORCE_SANDBOX

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_FORCE_SANDBOX is a Claude Code environment variable. Present since v2.1.69 or earlier and still present in v2.1.295. It is not in the official reference.

How to set it

For one session, export it in the shell that starts Claude Code:

export CLAUDE_CODE_FORCE_SANDBOX=<value>
claude

To apply it to every session, add it to the env object of a settings file:

// ~/.claude/settings.json
{
  "env": {
    "CLAUDE_CODE_FORCE_SANDBOX": "<value>"
  }
}

Related variables

• CLAUDE_CODE_BASH_SANDBOX_SHOW_INDICATOR: Show indicator when bash runs in sandbox.
• CLAUDE_CHROME_PERMISSION_MODE: Permission mode for Claude for Chrome.
• CLAUDE_CODE_AUTO_MODE_CLASSIFY_EDITS: Turns the classification pass on: every edit runs through the classifier before it touches disk.
• CLAUDE_CODE_AUTO_MODE_EDIT_REMOVAL: Governs whether Auto mode may delete content as part of an edit.
• CLAUDE_CODE_AUTO_MODE_EDIT_REMOVAL_CAP: Caps how much a single autonomous edit can remove before it's held for a human.
• CLAUDE_CODE_AUTO_MODE_EXTERNAL_PERMISSIONS: Hands permission decisions to an external policy engine instead of the built-in prompt.
• CLAUDE_CODE_AUTO_MODE_GIT_STATUS: Feeds the working tree's git status into the classifier's context.
• CLAUDE_CODE_AUTO_MODE_GIT_STATUS_LIMIT: Bounds how much of that status is included, so the classifier prompt doesn't balloon in large or messy repos.

Frequently asked questions

All variables, searchable: Claude Code environment variables.