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Sweep 10 Nov 2026 · 02:18Z Build v2.1.322 539 read Stable v2.1.311 Latest v2.1.322 Next v2.1.322 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.257 ·

Artifact publish supports auto_open: after_first_write

Starting an artifact from a type can pass auto_open after_first_write so it opens once its data files are filled in.

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Use it nowTier: how much it should matter to you
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2Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.257,
What probably matters to youSection of the release

When starting a new Artifact from a type, the guidance now recommends passing auto_open: "after_first_write" on the initial type-only publish, so the artifact opens automatically once its data files are filled in.

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Names in the bundleauto_open: "after_first_write"

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