CLAUDE_CODE_ARTIFACT_VERSIONS

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.292, including the newest one read.

Releases whose published page names CLAUDE_CODE_ARTIFACT_VERSIONS.

1. v2.1.292 6 Oct 2026
   Two new environment variables for managed config and artifact versions

   Claude Code now reads CLAUDE_CODE_MANAGED_CONFIG_PREFETCH at startup and keeps CLAUDE_CODE_ARTIFACT_VERSIONS out of programs it starts

   found in this entry's text

2. v2.1.292 6 Oct 2026
   New CLAUDE_CODE_ARTIFACT_VERSIONS environment variable appears

   A new environment variable, CLAUDE_CODE_ARTIFACT_VERSIONS, is added to Claude Code's lists of variables handed between processes

   found in this entry's text, named in this entry

3. v2.1.292 6 Oct 2026
   Claude can ask to read an earlier version of an artifact

   Reading an artifact can now ask for a past version by id, with clear errors if the version is unknown or the server returns another one

   found in this entry's text

The earliest release whose published evidence quoted CLAUDE_CODE_ARTIFACT_VERSIONS was v2.1.292, 6 Oct 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.

One 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.