CLAUDE_STAGE_FILE_ROOT

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_STAGE_FILE_ROOT 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	Other
Official docs	Not listed

How to set it

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

export CLAUDE_STAGE_FILE_ROOT=<value>
claude

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

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

Related variables

CLAUDE_CLIENT_PRESENCE_FILE
CLAUDE_CODE_DIAGNOSTICS_FILE: Path to write diagnostics output.
CLAUDE_CODE_TEST_FIXTURES_ROOT: Root directory for test fixtures.
CLAUDE_CODE_TWO_STAGE_CLASSIFIER: Added in v2.1.72 as an opt-in flag for two-stage intent classification.
CLAUDE_CODE_USE_NATIVE_FILE_SEARCH
CLAUDE_ENV_FILE: Path to environment file for session variables.
CLAUDE_CODE_ARTIFACT_MULTI_FILE
CLAUDE_CODE_HOST_CREDS_FILE

Frequently asked questions

Which Claude Code version has CLAUDE_STAGE_FILE_ROOT?

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

How do I set CLAUDE_STAGE_FILE_ROOT?

Export it before starting Claude Code (export CLAUDE_STAGE_FILE_ROOT=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.