A Claude Code environment variable, read out of the shipped bundle.
It has been in the build since v2.1.251, including the newest one read.
Nobody has written a line about this one. It is not in any of Anthropic's reference tables and no changelog entry here carries a description of it. It is in the build, which is the whole of what this page can claim.
First seen v2.1.251 28 Aug 2026
Last seen v2.1.308 22 Oct 2026
Builds49 / 149on this box, as of v2.1.308
Written about v2.1.128 first named in a changelog, 4 May 2026
v2.1.251in the build not in the build never minedv2.1.308
In the changelogs
1
Releases whose published page names CLOUDSDK_CORE_CUSTOM_CA_CERTS_FILE.
v2.1.128
found in this entry's text
First cited
0
No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
Presence across releases
1
BuildsHow manyDatesReading
v2.1.251 – v2.1.30849 builds28 Aug 2026 → 22 Oct 2026 ◆in the build
Build by build
49
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.
