Follow Discord
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 v2.1.248 ·

Publishing an artifact with an unreadable file reports a clearer cause

Publishing an artifact whose file can't be read now tells you that specifically.

You'll notice Bug Fixes
JSON All of v2.1.248
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
Bug FixesKind: in v2.1.248,
Bug FixesSection of the release
What

When the artifact being published cannot be read and no favicon could be derived from its type, the tool now raises a specific unread-file error rather than a generic read failure.

Details
  • The suggestion to start a new artifact from its type instead (passing type_url) is now only added when a favicon source was actually resolved
  • The old standalone "favicon required to publish" check is folded into the required-fields check, which reports that file path and favicon are both required
Evidence

file_path and favicon are required to publish

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.248 →

Feedback