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.
Artifact icon only needed the first time you publish a page
You'll notice
Useful3Signal1
Artifacts
Redeploying an artifact keeps its existing icon instead of churning it.
What's wrong with this entry?
Anonymous. No account, no email.
What
The icon is now described as required only on a page's first publish, with Claude told to omit it on redeploys so the existing icon is kept unless you ask for a new one. Redeploys no longer churn the icon.
Evidence
Required on a page's first publish
Strings lifted out of the shipped bundle, so the claim above can be checked against them.