CLAUDE_PREVIEW_CLASSIFIER_FLOOR

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_PREVIEW_CLASSIFIER_FLOOR is a Claude Code environment variable. Removed between v2.1.241 and v2.1.245, so current releases ignore it. It is not in the official reference.

Status	Removed between v2.1.241 and v2.1.245
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_PREVIEW_CLASSIFIER_FLOOR=<value>
claude

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

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

Related variables

CLAUDE_CHROME_CLASSIFIER_FLOOR
CLAUDE_CODE_ARTIFACT_PREVIEW_EMULATOR: Pins the artifact-preview emulator on (true) or off (false); left unset, a feature flag decides.
CLAUDE_CODE_CLASSIFIER_SUMMARY: Carries the output of a prompt classifier as a structured summary.
CLAUDE_CODE_QUESTION_PREVIEW_FORMAT: Format for permission question previews.
CLAUDE_CODE_TWO_STAGE_CLASSIFIER: Added in v2.1.72 as an opt-in flag for two-stage intent classification.
CLAUDE_CODE_ARTIFACT_PREVIEW
ANTHROPIC_BETAS: Comma-separated beta feature headers.
ANTHROPIC_CUSTOM_HEADERS: Custom HTTP headers (newline-separated Key: Value).

Frequently asked questions

Which Claude Code version has CLAUDE_PREVIEW_CLASSIFIER_FLOOR?

Removed between v2.1.241 and v2.1.245, so current releases ignore it.

How do I set CLAUDE_PREVIEW_CLASSIFIER_FLOOR?

Export it before starting Claude Code (export CLAUDE_PREVIEW_CLASSIFIER_FLOOR=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.