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Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.269 ·

A new mayBeAuthoredByNonOwner check restricts /output-style for non-owner callers

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Claude Code now tracks whether a caller may not be the account owner and uses it to restrict /output-style listing, switching, and error detail

TierYou'll noticehow much it should matter to you
Useful2my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaOutput Stylewhat it touches
KindBug Fixesin v2.1.269,
Group of 2 You'll notice

Claude Code now tracks whether a caller may not be the account owner and uses it to restrict /output-style listing, switching, and error detail

What

  • The settings-management code now threads through a new mayBeAuthoredByNonOwner value as part of its input.
  • The /output-style command now checks this value for the current caller, and when it's true, filters the list of available output styles down to only those that pass an additional check, and returns a generic "detail withheld on this connection" message instead of the real error if saving a style fails.

Why

This limits what a caller who might not be the account owner can see or change through /output-style, including hiding detailed error information that could otherwise leak information.

Read from
Names in the bundle/output-style
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-style, on Error reference. You ran [`/output-style`](/docs/en/output-styles#change-your-output-style) from the mobile app or web via [Remote Control](/docs/en/remote-control), or the command arrived in a message relayed into the session. Because such a turn may not … errors see the edit
Added since A small documentation edit on Modifying system prompts touched a line naming /output-style after this was published. * **CLI**: run `/output-style <style>`, for example `/output-style concise`, or run `/config` and select one. The `/output-style` command requires Claude Code v2.1.269 or later. agent-sdk/modifying-system-prompts see the edit
How sure we are
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agreesA small documentation edit on Modifying system prompts touched a line naming /output-style after this was published.
Anthropic's release notes agreeAdded /output-style [name] to list and switch output styles, including over Remote Control and in cloud and other headless sessions

See this entry in the whole of v2.1.269 →