CLAUDE_RUNNER_DEBUG_LOG_PATH

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_RUNNER_DEBUG_LOG_PATH is a Claude Code environment variable. Added between v2.1.222 and v2.1.224 and still present in v2.1.295. It is not in the official reference.

Status	Present in v2.1.295
Added	Added between v2.1.222 and v2.1.224
Category	Debugging
Official docs	Not listed

How to set it

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

export CLAUDE_RUNNER_DEBUG_LOG_PATH=<value>
claude

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

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

Related variables

CLAUDE_CODE_DEBUG_LOG_LEVEL: Set debug logging verbosity level.
ANTHROPIC_LOG: SDK internal logging level.
CLAUDE_CODE_COMMIT_LOG: Likely controls whether or where Claude Code logs commit operations.
CLAUDE_CODE_DEBUG_LOGS_DIR: Custom directory for debug logs.
CLAUDE_CODE_DEBUG_REPAINTS: Enables debug logging for terminal repaint operations.
CLAUDE_CODE_FRAME_TIMING_LOG: Enable per-frame render timing logs in the terminal UI.
CLAUDE_CODE_YOU_SHOULD_KNOW_DEBUG
CLAUDE_DEBUG: Enable debug logging.

Frequently asked questions

Which Claude Code version has CLAUDE_RUNNER_DEBUG_LOG_PATH?

Added between v2.1.222 and v2.1.224 and still present in v2.1.295.

How do I set CLAUDE_RUNNER_DEBUG_LOG_PATH?

Export it before starting Claude Code (export CLAUDE_RUNNER_DEBUG_LOG_PATH=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.