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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.247

Artifact auto-open stopped storing its failure banner

Under the hood
Useful1 Signal1
Artifacts

A failed artifact auto-open no longer leaves a banner flag behind in app state.

What

The auto-open path no longer writes a failed-frame flag into app state, using a callback instead, and keeps only its debug log and the surfacing telemetry.

Details
  • Telemetry outcomes remain auto_open_ok and auto_open_failed_*.
  • Created-from-type Artifact results now also record which auto-open mode was used.
Evidence

frame_surfaced

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

See this entry in the whole of v2.1.247 →