NODE_ENVA Claude Code environment variable, read out of the shipped bundle.
It was in the build from v2.1.160 and was gone by v2.1.246.
Claude Code now keeps a list of the environment variables that affect telemetry and feature flags
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.287 .
First seen v2.1.160
Last seen v2.1.245 25 Aug 2026, gone by v2.1.246
Builds 76 / 150 on this box, as of v2.1.309
Written about v0.2.53 first named in a changelog, 21 Mar 2025
v2.1.160 v2.1.309
In the changelogs
2
Releases whose published page names NODE_ENV.
v2.1.287 1 Oct 2026
v0.2.53 21 Mar 2025
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
2
Builds How many Dates Reading
v2.1.160 – v2.1.245 76 builds → 25 Aug 2026 ◆ in the build
v2.1.246 – v2.1.309 54 builds 25 Aug 2026 → 22 Oct 2026 ○ not in the build
Build by build
130
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.
Build Date State The record behind it
v2.1.163 4 Jun 2026 · presentverdict: present v2.1.165 5 Jun 2026 · presentverdict: present v2.1.166 5 Jun 2026 · presentverdict: present v2.1.167 6 Jun 2026 · presentverdict: present v2.1.168 6 Jun 2026 · presentverdict: present v2.1.169 8 Jun 2026 · presentverdict: present v2.1.170 9 Jun 2026 · presentverdict: present v2.1.172 10 Jun 2026 · presentverdict: present v2.1.173 11 Jun 2026 · presentverdict: present v2.1.174 11 Jun 2026 · presentverdict: present v2.1.175 12 Jun 2026 · presentverdict: present v2.1.176 12 Jun 2026 · presentverdict: present v2.1.177 13 Jun 2026 · presentverdict: present v2.1.178 15 Jun 2026 · presentverdict: present v2.1.179 16 Jun 2026 · presentverdict: present v2.1.181 17 Jun 2026 · presentverdict: present v2.1.182 18 Jun 2026 · presentverdict: present v2.1.183 19 Jun 2026 · presentverdict: present v2.1.185 20 Jun 2026 · presentverdict: present v2.1.186 22 Jun 2026 · presentverdict: present v2.1.187 23 Jun 2026 · presentverdict: present v2.1.190 24 Jun 2026 · presentverdict: present v2.1.191 24 Jun 2026 · presentverdict: present v2.1.193 25 Jun 2026 · presentverdict: present v2.1.195 26 Jun 2026 · presentverdict: present v2.1.196 29 Jun 2026 · presentverdict: present v2.1.197 30 Jun 2026 · presentverdict: present v2.1.198 1 Jul 2026 · presentverdict: present v2.1.199 2 Jul 2026 · presentverdict: present v2.1.200 3 Jul 2026 · presentverdict: present v2.1.201 3 Jul 2026 · presentverdict: present v2.1.202 6 Jul 2026 · presentverdict: present v2.1.203 7 Jul 2026 · presentverdict: present v2.1.204 8 Jul 2026 · presentverdict: present v2.1.205 8 Jul 2026 · presentverdict: present v2.1.206 9 Jul 2026 · presentverdict: present v2.1.207 10 Jul 2026 · presentverdict: present v2.1.208 13 Jul 2026 · presentverdict: present v2.1.209 14 Jul 2026 · presentverdict: present v2.1.210 14 Jul 2026 · presentverdict: present v2.1.211 15 Jul 2026 · presentverdict: present v2.1.212 16 Jul 2026 · presentverdict: present v2.1.213 17 Jul 2026 · presentverdict: present v2.1.214 18 Jul 2026 · presentverdict: present v2.1.215 19 Jul 2026 · presentverdict: present v2.1.216 20 Jul 2026 · presentverdict: present v2.1.217 21 Jul 2026 · presentverdict: present v2.1.218 22 Jul 2026 · presentverdict: present v2.1.219 24 Jul 2026 · presentverdict: present v2.1.220 24 Jul 2026 · presentverdict: present v2.1.221 3 Aug 2026 · presentverdict: present v2.1.222 4 Aug 2026 · presentverdict: present v2.1.223 5 Aug 2026 · presentverdict: present v2.1.224 7 Aug 2026 · presentverdict: present v2.1.225 7 Aug 2026 · presentverdict: present v2.1.226 8 Aug 2026 · presentverdict: present v2.1.227 10 Aug 2026 · presentverdict: present v2.1.228 11 Aug 2026 · presentverdict: present v2.1.229 12 Aug 2026 · presentverdict: present v2.1.231 13 Aug 2026 · presentverdict: present v2.1.232 13 Aug 2026 · presentverdict: present v2.1.233 14 Aug 2026 · presentverdict: present v2.1.234 17 Aug 2026 · presentverdict: present v2.1.235 18 Aug 2026 · presentverdict: present v2.1.236 19 Aug 2026 · presentverdict: present v2.1.237 19 Aug 2026 · presentverdict: present v2.1.238 20 Aug 2026 · presentverdict: present v2.1.239 21 Aug 2026 · presentverdict: present v2.1.240 22 Aug 2026 · presentverdict: present v2.1.241 22 Aug 2026 · presentverdict: present v2.1.242 24 Aug 2026 · presentverdict: present v2.1.243 24 Aug 2026 · presentverdict: present v2.1.245 25 Aug 2026 · presentverdict: present v2.1.246 25 Aug 2026 · removedverdict: removed
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 .
