A Claude Code CLI flag, read out of the shipped bundle.
It was in the build from v2.1.138 and was gone by v2.1.193.
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 v2.1.138 9 May 2026
Last seen v2.1.191 24 Jun 2026, gone by v2.1.193
Builds46 / 149on this box, as of v2.1.308
Written about v0.2.31 first named in a changelog, 5 Mar 2025
v2.1.138in the build not in the build never minedv2.1.308
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
v2.1.138 – v2.1.19146 builds9 May 2026 → 24 Jun 2026 ◆in the build
v2.1.193 – v2.1.308103 builds25 Jun 2026 → 22 Oct 2026 ○not in the build
Build by build
149
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 CLI flag does. All CLI flags.
