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 v2.1.238 Home All releases olderv2.1.237 v2.1.239newer
Claude Code v2.1.238

Artifact live rooms are fully built and cannot run in this build

Not switched on
Useful2 Signal5
Artifacts Notable

A complete live broadcast feature for artifacts is built into this version and nothing can switch it on.

A room_send action, approval copy, a rooms status section and join-on-publish all ship, with no flag or env var that reaches them.

What

A complete broadcast-channel feature for artifacts ships in the code, including a room_send action, its approval copy, validation, result rendering, a topic/data argument pair, a rooms section in artifact status and join-on-publish machinery. None of it is reachable, and no flag or environment variable can turn it on.

Details
  • Every entry point goes through a module handle that is set to null and never assigned anywhere in the bundle, so the enabled check is always false, topic never enters the frozen schema, status never emits a rooms section, and the accessor for the implementation throws.
  • Same null-placeholder pattern used for the live-edit module. Turning it on requires a different build.
Evidence

artifact rooms are not compiled into this build

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

See this entry in the whole of v2.1.238 →