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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

tengu_shimmering_cherny

flag in the build JSON

A Claude Code feature flag, read out of the shipped bundle. It has been in the build since v2.1.269, including the newest one read.

The staleness cutoff for auto-resuming an interrupted turn is now configurable, defaulting to 6 hours

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.269.

First seen v2.1.269 11 Sep 2026
Last seen v2.1.308 22 Oct 2026
Builds36 / 149on this box, as of v2.1.308
Written about v2.1.269 first named in a changelog, 11 Sep 2026
v2.1.269in the build not in the build never minedv2.1.308

In the changelogs

1

Releases whose published page names tengu_shimmering_cherny.

  1. v2.1.269
    Interrupted-turn resume 'staleness' window is now configurable via a numeric flag, and default widened

    The staleness cutoff for auto-resuming an interrupted turn is now configurable, defaulting to 6 hours

    gate cited by this entry

Gate readings

0

No release here has a gate table behind it for this flag. Most published releases have none at all: the readings exist only for versions the pipeline captured flag state on.

First cited

1

The earliest release whose published evidence quoted tengu_shimmering_cherny was v2.1.269, 11 Sep 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.

ReleaseDateThe span that was quoted
v2.1.26911 Sep 2026tengu_shimmering_cherny

Presence across releases

3
BuildsHow manyDatesReading
v2.1.269 – v2.1.30534 builds11 Sep 2026 → 20 Oct 2026 ◆in the build
v2.1.3061 build21 Oct 2026 ○not in the build
v2.1.307 – v2.1.3082 builds21 Oct 2026 → 22 Oct 2026 ◆in the build

Build by build

37

One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.

BuildDateStateThe record behind it
v2.1.26911 Sep 2026·addedverdict: added · default unknown
v2.1.27012 Sep 2026·presentverdict: present · default unknown
v2.1.27114 Sep 2026·presentverdict: present · default unknown
v2.1.27214 Sep 2026·presentverdict: present · default unknown
v2.1.27315 Sep 2026·presentverdict: present · default unknown
v2.1.27416 Sep 2026·presentverdict: present · default unknown
v2.1.27517 Sep 2026·presentverdict: present · default unknown
v2.1.27618 Sep 2026·presentverdict: present · default unknown
v2.1.27718 Sep 2026·presentverdict: present · default unknown
v2.1.27819 Sep 2026·presentverdict: present · default unknown
v2.1.28022 Sep 2026·presentverdict: present · default unknown
v2.1.28123 Sep 2026·presentverdict: present · default unknown
v2.1.28224 Sep 2026·presentverdict: present · default unknown
v2.1.28325 Sep 2026·presentverdict: present · default unknown
v2.1.28428 Sep 2026·presentverdict: present · default unknown
v2.1.28529 Sep 2026·presentverdict: present · default unknown
v2.1.28630 Sep 2026·presentverdict: present · default unknown
v2.1.2871 Oct 2026·presentverdict: present · default unknown
v2.1.2882 Oct 2026·presentverdict: present · default unknown
v2.1.2893 Oct 2026·presentverdict: present · default unknown
v2.1.2905 Oct 2026·presentverdict: present · default unknown
v2.1.2916 Oct 2026·presentverdict: present · default unknown
v2.1.2926 Oct 2026·presentverdict: present · default unknown
v2.1.2937 Oct 2026·presentverdict: present · default unknown
v2.1.2948 Oct 2026·presentverdict: present · default unknown
v2.1.2958 Oct 2026·presentverdict: present · default unknown
v2.1.2969 Oct 2026·presentverdict: present · default unknown
v2.1.29914 Oct 2026·presentverdict: present · default unknown
v2.1.30014 Oct 2026·presentverdict: present · default unknown
v2.1.30115 Oct 2026·presentverdict: present · default unknown
v2.1.30216 Oct 2026·presentverdict: present · default unknown
v2.1.30318 Oct 2026·presentverdict: present · default unknown
v2.1.30419 Oct 2026·presentverdict: present · default unknown
v2.1.30520 Oct 2026·presentverdict: present · default unknown
v2.1.30621 Oct 2026·removedverdict: removed
v2.1.30721 Oct 2026·addedverdict: added · default unknown
v2.1.30822 Oct 2026·presentverdict: present · default unknown

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the feature flag does. All feature flags.

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