CLAUDE_CODE_OVERRIDE_DATE

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_OVERRIDE_DATE is a Claude Code environment variable. Added between v2.1.143 and v2.1.212 and still present in v2.1.295. It is not in the official reference.

Status	Present in v2.1.295
Added	Added between v2.1.143 and v2.1.212
Category	Terminal and UI
Official docs	Not listed

How to set it

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

export CLAUDE_CODE_OVERRIDE_DATE=<value>
claude

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

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

Related variables

CLAUDE_CODE_BLOCKING_LIMIT_OVERRIDE: Override token limit for input blocking.
CLAUDE_CODE_IDE_HOST_OVERRIDE: Custom host address for IDE communication.
CLAUDE_COWORK_MEMORY_PATH_OVERRIDE
CLAUDE_RUNNER_DISABLE_AWAITING_ACTION_OVERRIDE
CLAUDE_AX_PREPARK_MS
CLAUDE_AX_SCREEN_READER
CLAUDE_AX_STARTUP_QUIET_MS: Startup quiet window (milliseconds) for screen-reader mode.
CLAUDE_CODE_ACCESSIBILITY: Enable accessibility mode; disables cursor hiding.

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_OVERRIDE_DATE?

Added between v2.1.143 and v2.1.212 and still present in v2.1.295.

How do I set CLAUDE_CODE_OVERRIDE_DATE?

Export it before starting Claude Code (export CLAUDE_CODE_OVERRIDE_DATE=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.