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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
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Claude Code v2.1.307 ·

A new hidden switch for an unnamed feature

Claude Code now checks a new remotely controlled switch that is off by default, and it is not yet clear what it controls

Nothing to try yet In Development
JSON All of v2.1.307
Nothing to try yetTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
InternalsArea: what it touches
In DevelopmentKind: in v2.1.307,
In DevelopmentSection of the release

Unclear Nothing shows what this switch turns on or off.

What

Claude Code now checks a new switch called tengu_valiant_finch. Anthropic's servers control this switch, and Claude Code treats it as off when the server sends no value. It is not yet clear which part of Claude Code depends on it.

Why

In practice nothing visible changes from this alone. It is a sign that something is being prepared that can be turned on later without a new release.

Read from
Feature flag
tengu_valiant_finch 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 v2.1.307: off

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

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 doubtNothing shows what this switch turns on or off.
The name it cites is new in this buildNew in this build: tengu_valiant_finch

See this entry in the whole of v2.1.307 →

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