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Sweep 03 Nov 2026 · 22:27Z Build v2.1.318 536 read Stable v2.1.311 Latest v2.1.318 Next v2.1.318 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.317 ·

Two more environment variable names join Claude Code's session lists

Claude Code now lists CLAUDE_CODE_FIZZY_GROVE and CLAUDE_CODE_DEEP_TWILIGHT alongside its other session environment variables

Under the hood No documentation found Internal Changes
JSON All of v2.1.317
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Environment VariablesArea: what it touches
Internal ChangesKind: in v2.1.317,
Internal ChangesSection of the release

Unclear What either variable does, and whether these lists hand them on to sessions Claude Code starts, is not shown.

What

Claude Code now names two more environment variables (named values handed from one program to the programs it starts): CLAUDE_CODE_FIZZY_GROVE and CLAUDE_CODE_DEEP_TWILIGHT. They sit in the same lists as CLAUDE_CODE_WITTY_DEWDROP and CLAUDE_CODE_SESSION_ORIGIN. CLAUDE_CODE_DEEP_TWILIGHT appears in only one of those lists.

Why

The names point to features that are present in this build but not described anywhere, so setting them has no documented effect.

Read from
Names in the bundleCLAUDE_CODE_FIZZY_GROVECLAUDE_CODE_DEEP_TWILIGHTCLAUDE_CODE_WITTY_DEWDROPCLAUDE_CODE_SESSION_ORIGIN
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat either variable does, and whether these lists hand them on to sessions Claude Code starts, is not shown.
The name it cites is new in this buildNew in this build: CLAUDE_CODE_DEEP_TWILIGHT

See this entry in the whole of v2.1.317 →

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