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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 v2.1.248 27 Aug 2026

Artifact scripts with a src are kept

You'll notice

Useful2 Signal2

Artifacts

Generated artifacts keep scripts that load from a src instead of stripping them.

What

The sanitizer that strips scripts from generated artifacts now leaves alone any script that carries a src attribute, in addition to the application/json blocks it already kept.

Evidence

application/json

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

See this entry in the whole of v2.1.248 →