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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.307 ·

New remotely controlled switch that counts as on by default

Claude Code gains a switch that counts as on unless the server turns it off while Claude Code points at a non-default host

Under the hood Internal Changes
JSON All of v2.1.307
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
InternalsArea: what it touches
Internal ChangesKind: in v2.1.307,
Internal ChangesSection of the release

Unclear What this switch turns on or off is not stated.

What

Claude Code has a new check that reads a remotely controlled setting, tengu_calm_nautilus. It counts as on unless all of these hold:

  • the setting's value is off
  • that value came from the server
  • Claude Code is connected to a host other than the default one

If the setting cannot be read at all, or reading it fails, it also counts as on.

Why

This is the shape of an emergency off switch: something stays enabled unless it is deliberately turned off.

Read from
Feature flag
tengu_calm_nautilus Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.307: 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 v2.1.307. It isn't a statement about your account. What a flag value here can and cannot tell you

What has happened since
Flag reading moved The flag server now returns off for tengu_calm_nautilus, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns nothing at all, having stopped carrying it for tengu_calm_nautilus, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.

See this across every release →

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 this switch turns on or off is not stated.
The name it cites is new in this buildNew in this build: tengu_calm_nautilus

See this entry in the whole of v2.1.307 →

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