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 v2.1.227 Home All releases olderv2.1.226 v2.1.228newer
Claude Code v2.1.227

Artifact watches gain heartbeats, idle retirement and eviction

Not switched on
Useful2 Signal4
Artifacts

Artifact watches get heartbeats, drop when idle, and evict the least active one at the limit.

Watch heartbeats, idle retirement and eviction are present, with no visible switch controlling them.

What

Watchers on published artifacts now send a periodic activity heartbeat with debounced start and stop edges, drop automatically-armed watches that have gone quiet past a time-to-live, and, when the session hits its watch limit, evict the least active one and say it "made room to watch a newer one". Watches you set explicitly and the most recently published artifact are never retired. Nothing in this build was found to switch the behaviour on or off.

Details
  • auto-react threads gained instruction text telling the model to reply and resolve a thread once it has finished acting on it
Evidence

artifact_activity_emit

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

See this entry in the whole of v2.1.227 →