CLAUDE_CODE_ARTIFACT_TEXT_VARIANT
A Claude Code environment variable, read out of the shipped bundle. It was in the build from v2.1.281 and was gone by v2.1.296.
The Artifact tool's instructions now come in versions v0, v1 and v2, picked once per session by an env var, the session origin or a flag
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.281.
In the changelogs
3Releases whose published page names CLAUDE_CODE_ARTIFACT_TEXT_VARIANT.
-
v2.1.281
Artifact tool text variants v0/v1/v2 selected by env var or flag
The Artifact tool's instructions now come in versions v0, v1 and v2, picked once per session by an env var, the session origin or a flag
found in this entry's text, named in this entry
-
v2.1.281
Artifacts tool: prompt text variants behind tengu_cobalt_plinth_sloe
The Artifacts tool's instructions to the model now come in three text variants, v0, v1 and v2, chosen once per session
found in this entry's text, named in this entry
-
v2.1.281
New gate tengu_swirling_squid for Artifact capabilities inherited from a type
Behind
tengu_swirling_squid, publishing an Artifact made from a published type notes that its capabilities come from that typefound in this entry's text
First cited
1The earliest release whose published evidence quoted CLAUDE_CODE_ARTIFACT_TEXT_VARIANT was v2.1.281, 23 Sep 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
Presence across releases
2Build by build
38One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the environment variable does. All environment variables.