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

Artifact watching now has three modes, and says which one you are in

You'll notice
Useful3 Signal3
Artifacts

Artifact watch status now tells you plainly when live watching is switched off rather than staying vague.

Feature flag
tengu_slate_lantern On for this account, and not off by default

The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.

This account: on · anonymous baseline: on · compiled default in v2.1.239: on

Read once, for one account on one subscription tier, against v2.1.239. It isn't a statement about your account. What a flag value here can and cannot tell you

What

Guidance about watching artifacts for republishes now branches three ways: live watching (the in-session subscription, behind tengu_slate_lantern, fallback off), durable watching (a wake subscription the artifact service holds for remote sessions), and none. The empty-status message now tells a local session that live watching is switched off rather than implying nothing is being watched.

Details
  • The wording changes across the watch, unwatch and status guidance together.
  • Remote sessions get different text from a local session with live watching off.
Evidence

No artifact watches in this session. Live artifact watching is off in this session, so nothing will notify it of republishes.

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 →