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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 v2.1.234

Artifact stub mode hides the /artifacts browser

Use it now
Useful1 Signal2
Artifacts not in their notes

In artifact stub mode the /artifacts browser hides itself, since there is no gallery to browse.

CLAUDE_CODE_EVAL_ARTIFACT_STUB_DIR/artifacts
What

While CLAUDE_CODE_EVAL_ARTIFACT_STUB_DIR is set, published artifacts resolve to local stub URLs of the form eval-stub://artifact/<slug> and the /artifacts browse command is hidden, since there is no remote gallery to browse. The plugin eval CLI sets the variable for the sessions it spawns.

Evidence

eval-stub://artifact/

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.234 →