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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 v2.1.239 ·

One shared test for whether a run is headless

One shared check now decides whether a run is non-interactive, covering print mode and piped output.

Under the hood Internal Changes
JSON All of v2.1.239
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
CLIArea: what it touches
Internal ChangesKind: in v2.1.239,
Internal ChangesSection of the release
What

A single helper now decides that a run is non-interactive, covering -p, --print, --init-only, any argument starting with --sdk-url, and stdout not being a terminal.

Evidence

--init-only

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Read from
Names in the bundle-p--print--init-only
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up --print, on Claude Code changelog. * Fixed PermissionRequest hooks not firing in `--print` mode changelog see the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up --print, on Claude Code changelog.

See this entry in the whole of v2.1.239 →

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