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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 v2.1.251 ·

Auto mode can now grant artifact room joins on its own

In auto mode, Claude can join an artifact's live room itself unless you refused before.

You'll notice Notable New Features
JSON All of v2.1.251
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
New FeaturesKind: in v2.1.251,
What probably matters to youSection of the release
What

Consent to join an artifact's live room, previously only a yes or no you gave, can now be recorded as granted by the automatic permission classifier. That grant holds only while the session stays in auto permission mode, and a refusal or a manual stop you made earlier keeps the classifier from auto-joining that room again.

Details
  • Consent is stored per room with the value classifier alongside the existing true/false.
  • The check requires the mode to be auto and the room not to have been stopped by the user.
  • Bookkeeping tracks whether the room was asked about, refused by the user, and stopped by the user.
  • A sweep detects when a classifier grant is no longer valid, leaves the room and clears the stored consent.
Evidence

artifactRoomJoinConsentSlugs, artifactRoomJoinConsentSlugs?.[r] !== "classifier"

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

Read from
Names in the bundleauto
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 auto, on Give Claude access to your tools. A Datadog API key, for example, makes the API reachable, and a Datadog plugin tells Claude which endpoints answer which questions. Sessions in covered channels pick up attached plugins automatically, with nothing to install or enable. Chan… claude-tag/admins/add-connections see the edit
Added since A small documentation edit on Orchestrate subagents at scale with dynamic workflows touched a line naming auto after this was published. An `agent()` call resolves to `null` if you stop it mid-run or it hits an unrecoverable API error. In [auto mode](/docs/en/permission-modes#eliminate-prompts-with-auto-mode), the classifier can block an `agent()` call before the subagent s… workflows see the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesA small documentation edit on Orchestrate subagents at scale with dynamic workflows touched a line naming auto after this was published.

See this entry in the whole of v2.1.251 →

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