Follow Discord
Sweep 12 Nov 2026 · 23:00Z Build v2.1.323 540 read Stable v2.1.311 Latest v2.1.323 Next v2.1.323 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeReleasesv2.1.323entry #58

Claude Code v2.1.323 ·

Claude Code reads the session's creation time from an environment variable

Claude Code now reads CLAUDE_CODE_SESSION_CREATED_AT_MS and records it as the session's creation time

Use it now No documentation found Internal Changes
JSON All of v2.1.323
Use it nowTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Environment VariablesArea: what it touches
Internal ChangesKind: in v2.1.323,
What probably matters to youSection of the release
What

Claude Code now reads CLAUDE_CODE_SESSION_CREATED_AT_MS, an environment variable (a named value handed from one program to the programs it starts). It stores the value as the session's creation time in the information it records about the session, next to the value of CLAUDE_CODE_SESSION_ORIGIN.

Why

A program that starts Claude Code can now tell it when the session was created.

Read from
Names in the bundleCLAUDE_CODE_SESSION_CREATED_AT_MSCLAUDE_CODE_SESSION_ORIGIN
How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: CLAUDE_CODE_SESSION_CREATED_AT_MS

See this entry in the whole of v2.1.323 →

Feedback