CLAUDE_CODE_CONFIG_PROBE

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_CONFIG_PROBE is a Claude Code environment variable. Added in v2.1.286 and still present in v2.1.295. It is not in the official reference.

How to set it

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

export CLAUDE_CODE_CONFIG_PROBE=<value>
claude

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

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

Related variables

• CLAUDE_CODE_MANAGED_CONFIG_PREFETCH: Turns on a hedged prefetch of the organization's managed settings during startup, so the first managed-settings fetch runs earlier in the launch sequence.
• CLAUDE_CODE_RESTRICT_PERSONAL_CONFIG: Limits what a session's own Claude Code files may do.
• CLAUDE_CONFIG_DIR: Custom config directory.
• GIT_CONFIG_COUNT
• CLAUDE_CODE_CONFIG_WATCH_EVENTS
• CLAUDE_SECURESTORAGE_CONFIG_DIR
• ANTHROPIC_BETAS: Comma-separated beta feature headers.
• ANTHROPIC_CUSTOM_HEADERS: Custom HTTP headers (newline-separated Key: Value).

Frequently asked questions

All variables, searchable: Claude Code environment variables.