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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.265 ·

writerClass added to cowritten-artifact metadata

Cowritten artifact metadata now includes a writerClass derived from the user's permission role

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Cowritten artifact metadata now includes a writerClass derived from the user's permission role

What

Metadata attached to collaboratively-edited artifacts and documents, which already included cowritten, agentDirect, and typeLocked, now also carries a writerClass field. It is derived from whether the caller has an owner or writer permission role, and is used to decide whether a write applies to a single page or to the whole document.

Why

This lets the system scope collaborative edits differently depending on the editor's role, so an owner and a writer may not always have the same write scope on a shared artifact.

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Names in the bundlewriterClass

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