CLAUDE_CODE_SAFE_MODE

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_SAFE_MODE is a Claude Code environment variable. Added between v2.1.143 and v2.1.212 and still present in v2.1.294. It is listed in the official reference.

Status	Present in v2.1.294
Added	Added between v2.1.143 and v2.1.212
Category	Other
Official docs	Listed

How to set it

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

export CLAUDE_CODE_SAFE_MODE=<value>
claude

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

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

Related variables

CLAUDE_CODE_PERFORCE_MODE: Activates Perforce VCS integration.
CLAUDE_CODE_PLAN_MODE_INTERVIEW_PHASE: Enable interview phase in plan mode.
CLAUDE_CODE_PLAN_MODE_REQUIRED: Require agents to use plan mode for all tasks.
CLAUDE_REPL_MODE: Sets the operating mode for the REPL interface.
CLAUDE_CODE_TODO_REMINDER_MODE
ANTHROPIC_BETAS: Comma-separated beta feature headers.
ANTHROPIC_CUSTOM_HEADERS: Custom HTTP headers (newline-separated Key: Value).
ANTHROPIC_FEDERATION_RULE_ID

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_SAFE_MODE?

Added between v2.1.143 and v2.1.212 and still present in v2.1.294.

How do I set CLAUDE_CODE_SAFE_MODE?

Export it before starting Claude Code (export CLAUDE_CODE_SAFE_MODE=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.