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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 v2.1.187 23 Jun 2026

Artifact tool — improved file-not-found error

When the Artifact tool is called with a path that does not exist, the error message now mentions the shell as an alternative to the Write tool.

Details

Old: "Use the Write tool to create the file first, then call Artifact with the same absolute path."
New: "Create the file first (Write tool, or via shell if Write is unavailable), then retry with the same path."

Evidence

Updated error message (search for "or via shell if Write is unavailable")

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

See this entry in the whole of v2.1.187 →