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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 ·

New server switch guards a step in the cloud session creation checklist

A new switch, on unless turned off remotely, guards a one-time step in the checklist shown while a cloud session is created

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

Unclear It is not clear what the one-time action on the checklist screen does.

What

Claude Code has a new switch, tengu_velvety_mango, that Anthropic's servers can control. When the server sends nothing, or the lookup fails, Claude Code treats it as on.

It is used by the checklist screen shown while a cloud session (a session running on Anthropic's servers) is being created. When the switch is on and another condition is also met, the screen runs one action, and only once.

Why

Because the built-in fallback is on, this step runs unless the server turns it off.

Read from
Feature flag
tengu_velvety_mango 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 doubtIt is not clear what the one-time action on the checklist screen does.
The name it cites is new in this buildNew in this build: tengu_velvety_mango

See this entry in the whole of v2.1.309 →

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