Source Intelligence

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.

All of v2.1.223 Home All releases olderv2.1.222 v2.1.224newer

Artifact explainer must justify having no visual

Not switched on
Useful2 Signal2
Artifacts

Artifact explainers must now name a diagram type or spell out why there is no visual.

The visual field became a discriminated union requiring a reason when absent; whether this schema is live could not be resolved.

What

The synthesis visual field can no longer simply be null; a missing visual has to state why. The activation state of this schema could not be resolved.

Details
  • visual is now a discriminated union carrying a delta_diagram, flow, or before_after
  • the alternative is an explicit {kind: "none", reason} whose reason must be non-blank
  • renderers switch on kind === "none" instead of a null check
Evidence

the no-visual reason must not be blank

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

See this entry in the whole of v2.1.223 →