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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 v2.1.234 ·

Permission mode changes are announced on the stream-json output

Scripted sessions now get a stream-json status message whenever the permission mode changes.

Use it now Notable New Features
JSON All of v2.1.234
Use it nowTier: how much it should matter to you
4Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SDKArea: what it touches
New FeaturesKind: in v2.1.234,
What probably matters to youSection of the release
What

Programmatic sessions (SDK and --output-format stream-json) now get a message whenever the permission mode changes: {type:"system", subtype:"status", status:null, permissionMode, uuid, session_id}. The same status is re-sent when a remote client reconnects or attaches, so a client that joined late still knows the current mode. Controlled by tengu_wobbly_pinwheel, which falls back to true, so it is on unless remote config turns it off.

Details
  • The emission on mode change sits behind a flag helper; the reconnect/attach resend keeps late joiners in sync.
  • status is null on these messages; the mode itself is carried in permissionMode.
Evidence

tengu_wobbly_pinwheel

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

Read from
Names in the bundle--output-format stream-json
Feature flag
tengu_wobbly_pinwheel 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 v2.1.234: on

Read once, for one account on one subscription tier, against v2.1.234. It isn't a statement about your account. What a flag value here can and cannot tell you

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 --output-format, on Claude Code changelog. * Fixed `permission_denials` in `--output-format stream-json` results omitting Read, Edit and Write calls blocked by a path-scoped deny rule changelog see the edit
How sure we are
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up --output-format, on Claude Code changelog.
The name it cites is new in this buildNew in this build: tengu_wobbly_pinwheel

See this entry in the whole of v2.1.234 →

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