CLAUDE_CODE_FORCE_SANDBOX

Updated October 23, 2026 by Alex Sorokoletov

CLAUDE_CODE_FORCE_SANDBOX is a Claude Code environment variable. Removed in v2.1.300, so current releases ignore it. It is not in the official reference.

Status	Removed in v2.1.300
Added	Present since v2.1.69 or earlier
Category	Permissions and sandbox
Official docs	Not listed

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_CODE_SANDBOX_LEAVE_DENIES_TO_SRT_WIN
CLAUDE_CODE_SANDBOX_LEAVE_PARENT_FOLDERS_ALONE
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.

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_FORCE_SANDBOX?

Removed in v2.1.300, so current releases ignore it.

How do I set CLAUDE_CODE_FORCE_SANDBOX?

Export it before starting Claude Code (export CLAUDE_CODE_FORCE_SANDBOX=value), or add it to the "env" object in ~/.claude/settings.json to apply it to every session.

All variables, searchable: Claude Code environment variables.