CLAUDE_CODE_ARTIFACT_ROOM

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_ARTIFACT_ROOM is a Claude Code environment variable. Added in v2.1.238 and still present in v2.1.295. It is not in the official reference.

Status	Present in v2.1.295
Added	Added in v2.1.238
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_ARTIFACT_ROOM=<value>
claude

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

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

Release notes that mention it

Related variables

CLAUDE_CODE_ARTIFACT: Turns on Artifacts, with companions for its API endpoint, direct upload, and MCP exposure.
CLAUDE_CODE_ARTIFACT_AUTO_OPEN
CLAUDE_CODE_ARTIFACT_COMMENTS
CLAUDE_CODE_ARTIFACT_COMMENTS_AUTOREACT
CLAUDE_CODE_ARTIFACT_DELETE: Enables the delete-Artifact path (owner-only, requires confirmation, blocked in plan mode).
CLAUDE_CODE_ARTIFACT_PREVIEW_EMULATOR: Pins the artifact-preview emulator on (true) or off (false); left unset, a feature flag decides.
CLAUDE_CODE_ARTIFACT_VERSIONS: When set, the session can list and read an artifact's earlier versions; without it, a session reports that an artifact's earlier versions are not available.
CLAUDE_ARTIFACT_HOST_GRANT

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_ARTIFACT_ROOM?

Added in v2.1.238 and still present in v2.1.295.

How do I set CLAUDE_CODE_ARTIFACT_ROOM?

Export it before starting Claude Code (export CLAUDE_CODE_ARTIFACT_ROOM=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.