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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 v2.1.222

Artifact comments use server delivery timestamps

You'll notice
Useful2 Signal0
Artifacts

Artifact comments track when the server delivered them, so you should stop seeing the same comment twice.

What

Comment state now records when the server actually handed a comment to Claude, and the client uses that instead of local bookkeeping to decide what has already been shown.

Details
  • The comment schema gained sent_to_claude, sent_to_claude_degraded and awaiting_reply.
  • The client maps the server's to_claude_at into toClaudeAt and toClaudeAtDegraded.
  • A helper parses the timestamp and returns null when it cannot be parsed, so an unreadable value is treated as not-yet-delivered rather than crashing.
Evidence

to_claude_at

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

See this entry in the whole of v2.1.222 →