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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

Claude Code v2.1.305 ·

Headless runs send out pending messages early for ! shell commands

In headless runs, Claude Code now sends out waiting messages before a turn starts when the input is a ! shell command

Under the hood Internal Changes
JSON All of v2.1.305
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Headless ModeArea: what it touches
Internal ChangesKind: in v2.1.305,
Internal ChangesSection of the release

Unclear It is not clear whether this changes the order of messages a reader would see.

What

In headless mode, where Claude Code runs without its interactive screen, input that starts with ! runs a shell command directly. For that kind of input, Claude Code now sends out any messages that are waiting before it starts the turn.

Why

This may change the order in which ! commands and their output appear in a headless session's record.

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 whether this changes the order of messages a reader would see.

See this entry in the whole of v2.1.305 →

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