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Sweep 02 Oct 2026 · 18:55Z Build v2.1.288 509 read Stable v2.1.285 Latest v2.1.288 Next v2.1.288 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.288 ·

An internal check became a simple remote on/off switch

An internal check that used to be looked up on the fly is now a plain remote switch that falls back to off

Under the hood Internal Changes
JSON All of v2.1.288
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 v2.1.288,
Internal ChangesSection of the release
What

An internal check used to look up a value and test whether it said "holds". It now reads a remote switch, tengu_twinkling_hoare, directly. That switch falls back to off when the server sends nothing.

Why

It is not yet known what this check controls, so there is no visible effect to describe.

Read from
Feature flag
tengu_twinkling_hoare 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 v2.1.288: 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 v2.1.288. 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 unclear what parts of Claude Code depend on this check.
The name it cites is new in this buildNew in this build: tengu_twinkling_hoare

See this entry in the whole of v2.1.288 →

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