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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.251 ·

Artifact publish response tracks defaulted capabilities and surfaces it in messaging

Publishing an artifact now reports who it is shared with.

Group of 2 You'll notice Improvements
JSON All of v2.1.251
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.251,
ImprovementsSection of the release

The publish tool's response payload can now include an audience field (derived from the read record's sharing mode) and a capabilitiesDefaulted flag indicating the connector capabilities manifest was auto-filled with a default rather than explicitly supplied.

The tool-result text explaining an artifact's stored capability declaration was reworked to use this flag: it now distinguishes a type-derived declaration, one carried forward from a previous version, and a new case using DEFAULT_ARTIFACT_CAP_NOTE when capabilitiesDefaulted is true. Previously there was only a single 'carried forward' message.

See this entry in the whole of v2.1.251 →

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