A Claude Code environment variable, read out of the shipped bundle.
It was in the build from v2.1.169 and was gone by v2.1.208.
Path to the srt-win.exe helper that the sandbox runtime spawns. If set and the file exists it is used; otherwise Claude Code looks under the sandbox runtime's vendor/srt-win and vendor/srt-win-src build folders, and throws srt-win.exe not found when none exists.
Not Anthropic's. Written by Claude Opus 5.5 from reading the v2.1.207 bundle, and it can be wrong.
First seen v2.1.169 8 Jun 2026
Last seen v2.1.207 10 Jul 2026, gone by v2.1.208
Builds32 / 150on this box, as of v2.1.309
Written about v2.1.169 first named in a changelog, 8 Jun 2026
v2.1.169in the build not in the build never minedv2.1.309
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
BuildsHow manyDatesReading
v2.1.169 – v2.1.20732 builds8 Jun 2026 → 10 Jul 2026 ◆in the build
v2.1.208 – v2.1.30990 builds13 Jul 2026 → 22 Oct 2026 ○not in the build
Build by build
122
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.
