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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
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Claude Code v2.1.288 ·

Remote switches now control two subagent and tool-result behaviours

Two remote switches, off by default, control keeping a file-sending tool's results in subagents and how unanswered tool requests are found

Nothing to try yet In Development
JSON All of v2.1.288
Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SubagentsArea: what it touches
In DevelopmentKind: in v2.1.288,
In DevelopmentSection of the release
What

Two behaviours now depend on switches decided by Anthropic's servers. Both are off unless switched on remotely:

In a reading taken before this release, the servers returned tengu_eager_pillow as on for this site's account.

Why

Both start off. Their effect depends on whether Anthropic switches them on for an account.

Read from
Feature flag
tengu_lucky_whisper 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.

tengu_eager_pillow Off by default, switched on for this account

The shipped code defaults this off, and the flag server returned on for the one account this site reads on this version. That is the reading that makes the entry above worth a second look, and it still says nothing about your account.

This account: on · anonymous baseline: on · 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.

tengu_send_user_file 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: 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 v2.1.288. 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 doubtWhat either switch changes for a user in practice is not shown.
The name it cites is new in this buildNew in this build: tengu_lucky_whisper

See this entry in the whole of v2.1.288 →

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