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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.311 ·

Artifact publishing tool result now carries extra text

The result of the artifact_mcp_laptop_publish_row tool now gets a block of text appended to it

Under the hood Internal Changes
JSON All of v2.1.311
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
Internal ChangesKind: in v2.1.311,
Internal ChangesSection of the release

Unclear The content of the appended text and when exactly it is added are not known.

What

The result returned by the artifact_mcp_laptop_publish_row tool is now handled differently. When its data is a list and a condition holds, Claude Code appends a block of text to it. Before, the data was transformed rather than added to.

Why

The output of this artifact publishing tool now carries extra text.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe content of the appended text and when exactly it is added are not known.

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