CLAUDE_CODE_DIR_SYNC_ARCHIVE
A Claude Code environment variable, read out of the shipped bundle. It was in the build from v2.1.242 and was gone by v2.1.246.
CLAUDE_CODE_DIR_SYNC_DISABLE_ANCHORING turns off path anchoring, and seven sync variables are now stripped from child processes.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.239.
In the changelogs
5Releases whose published page names CLAUDE_CODE_DIR_SYNC_ARCHIVE.
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v2.1.246
Cloud directory sync is now git-only, plus a new mode for plain folders
Cloud directory sync now only does git; the per-file and archive engines are gone.
found in this entry's text
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v2.1.242
Cloud directory sync gains git and tar-archive engines beside the per-file lane
Cloud file sync gains git-bundle and tar-archive modes, but you still sync file by file.
found in this entry's text
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v2.1.242
Cloud session sync for folders that are not git checkouts
Cloud sessions could sync a plain folder, not just a git checkout, if an env var is set.
named in this entry, found in this entry's text
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v2.1.239
Directory-sync anchoring can be switched off, plus seven dir-sync variables now stripped from child processes
CLAUDE_CODE_DIR_SYNC_DISABLE_ANCHORING turns off path anchoring, and seven sync variables are now stripped from child processes.
named in this entry, found in this entry's text
-
v2.1.239
Sync and hook-forwarding switches now survive into remote sessions
Seven more environment variables you export locally now carry into remote and worker processes.
named in this entry, found in this entry's text
First cited
1The earliest release whose published evidence quoted CLAUDE_CODE_DIR_SYNC_ARCHIVE was v2.1.246, 25 Aug 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
56One 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.