xtversion
A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
Claude Code now classifies terminal identity replies into known terminal names for telemetry
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.268.
In the changelogs
2Releases whose published page names xtversion.
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v2.1.268
Terminal identity (XTVERSION) response now normalized/classified for telemetry
Claude Code now classifies terminal identity replies into known terminal names for telemetry
found in this entry's text
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v2.1.268
Terminal identity/version now reported in a startup telemetry probe
Claude Code now identifies your terminal emulator and its version and reports it in a startup telemetry event
found in this entry's text
First cited
0No 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
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
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 settings key does. All settings keys.