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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

Claude Code v2.1.275 ·

Bulk file upload support for artifact asset uploads

The artifact tool's upload_asset can now describe uploading a list of multiple local files at once

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You'll noticeTier: how much it should matter to you
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1Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.275,
ImprovementsSection of the release

Unclear The finding shows the description change implying multi-file support, but doesn't confirm the underlying upload mechanism itself changed.

What

The description Claude sees for upload_asset, part of the Artifact tool, now distinguishes between uploading a single local file and uploading a list of several local files, phrased as "a list of N local files." This follows earlier work that expanded which file types (adding stylesheets and scripts) could be uploaded as assets.

Why

This suggests upload_asset can now handle multiple files in one call rather than requiring a separate call per file, which would make attaching several assets to an artifact more efficient.

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Names in the bundleupload_asset
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Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe finding shows the description change implying multi-file support, but doesn't confirm the underlying upload mechanism itself changed.

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