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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.309 ·

Daemon commands other than run perform an extra startup step

Every daemon subcommand except run now carries out an extra step at startup, controlled by a remote switch

Under the hood Internal Changes
JSON All of v2.1.309
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
DaemonArea: what it touches
Internal ChangesKind: in v2.1.309,
Internal ChangesSection of the release

Unclear What the new startup step actually does is not known.

What

The daemon is a Claude Code process that runs in the background. Every daemon subcommand other than run now performs an extra step when it starts, and that step takes into account whether Claude Code is attached to an interactive terminal. The step is controlled by a remote switch whose fallback, when the server sends nothing, is on.

Separately, the cleanup of background sessions is now done only when an additional condition also holds.

Why

Daemon commands now do more at startup than they did, by default unless the step is switched off remotely.

Read from
Feature flag
tengu_iterative_cosmos Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.309: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.309. It isn't a statement about your account. What a flag value here can and cannot tell you

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 the new startup step actually does is not known.
The name it cites is new in this buildNew in this build: tengu_iterative_cosmos

See this entry in the whole of v2.1.309 →

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