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 v2.1.239 Home All releases olderv2.1.238 v2.1.240newer
Claude Code v2.1.239

Spreadsheet and slides artifact skills deleted from the bundle

You'll notice
Useful4 Signal3
Artifacts

Spreadsheet and presentation deck artifact skills are gone; only the document skill ships now.

What

Of the three artifact skills, only the document one remains; the spreadsheet ("Publish a spreadsheet Artifact") and presentation deck ("Publish a presentation deck Artifact") skills are gone, taking their very large instruction bodies and HTML templates (the grid and formula engine, the slide studio and present mode) out of the build. That is a substantial size cut.

Details
  • Neither skill was reachable in either build: all three share a check whose first half is hardcoded to false, so the whole artifact-skill family is off in v2.1.238 and v2.1.239 alike.
  • The whiteboard skill lives in a separate registry and ships unchanged.
Evidence

menuDescription: "Publish a presentation deck Artifact"

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

See this entry in the whole of v2.1.239 →