CLAUDE_CODE_ENABLE_CFC

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_ENABLE_CFC is a Claude Code environment variable: Enable Claude for Chrome browser automation. Present since v2.1.69 or earlier and still present in v2.1.294. It is listed in the official reference.

Status	Present in v2.1.294
Added	Present since v2.1.69 or earlier
Category	Feature toggles
Official docs	Listed

How to set it

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

export CLAUDE_CODE_ENABLE_CFC=<value>
claude

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

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

Release notes that mention it

83 Undocumented Claude Code Environment Variables (v2.1.19)

Related variables

CLAUDE_CODE_DISABLE_CFC_PROMPT
CLAUDE_CODE_ENABLE_AWAY_SUMMARY: Enables generation of a summary when the user returns after being away from an active session.
CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION: Enables a prompt suggestion feature in the Claude Code UI.
CLAUDE_CODE_ENABLE_SDK_FILE_CHECKPOINTING: Enable file checkpointing in SDK mode.
CLAUDE_CODE_ENABLE_TASKS: Enable the task system.
CLAUDE_CODE_ENABLE_XAA: Enables an internal feature flagged as "XAA." The acronym is opaque, but the ENABLE_ prefix and proximity to other experimental flags suggest this is an opt-in capability still under development.
ENABLE_BETA_TRACING_DETAILED: Enable detailed beta tracing.
ENABLE_BTW: Enable "by the way" suggestions.

Frequently asked questions

What does CLAUDE_CODE_ENABLE_CFC do?

Enable Claude for Chrome browser automation

Which Claude Code version has CLAUDE_CODE_ENABLE_CFC?

Present since v2.1.69 or earlier and still present in v2.1.294.

How do I set CLAUDE_CODE_ENABLE_CFC?

Export it before starting Claude Code (export CLAUDE_CODE_ENABLE_CFC=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.