CLAUDE_CODE_ULTRAREVIEW_LAUNCH_RECORD

Updated November 3, 2026 by Alex Sorokoletov

CLAUDE_CODE_ULTRAREVIEW_LAUNCH_RECORD is a Claude Code environment variable: Path where the ultrareview launch writes the session ID, created as a new file with mode 0600; when set, it also collapses newlines in the command's output. Added in v2.1.318 and still present in v2.1.318. It is not in the official reference.

Status	Present in v2.1.318
Added	Added in v2.1.318
Category	Other
Official docs	Not listed

How to set it

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

export CLAUDE_CODE_ULTRAREVIEW_LAUNCH_RECORD=<value>
claude

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

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

Related variables

CLAUDE_CODE_ULTRAREVIEW_PREFLIGHT_FIXTURE: Points to a test fixture file used during the preflight phase of UltraReview — Claude Code's automated PR review pipeline.
CLAUDE_CODE_ULTRAREVIEW_QUOTA_FIXTURE: Supplies a fixture for the ultrareview quota (reviews used, limit, remaining, overage) that replaces the live fetch; ignored if it does not parse to that shape.
CLAUDE_PTY_RECORD: Enables PTY session recording for a background agent — captures the raw terminal byte stream as a bit-for-bit replay artifact, not just a transcript.
CLAUDE_CODE_HOST_PROMPT_SUPERSEDES_RECORD
ANTHROPIC_BETAS: Comma-separated beta feature headers.
ANTHROPIC_CUSTOM_HEADERS: Custom HTTP headers (newline-separated Key: Value).
ANTHROPIC_FEDERATION_RULE_ID
ANTHROPIC_ORGANIZATION_ID

Frequently asked questions

What does CLAUDE_CODE_ULTRAREVIEW_LAUNCH_RECORD do?

Path where the ultrareview launch writes the session ID, created as a new file with mode 0600; when set, it also collapses newlines in the command's output.

Which Claude Code version has CLAUDE_CODE_ULTRAREVIEW_LAUNCH_RECORD?

Added in v2.1.318 and still present in v2.1.318.

How do I set CLAUDE_CODE_ULTRAREVIEW_LAUNCH_RECORD?

Export it before starting Claude Code (export CLAUDE_CODE_ULTRAREVIEW_LAUNCH_RECORD=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.