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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 auto-replies stop describing their own plumbing

Not switched on
Useful2 Signal3
Artifacts not in their notes

Automatic artifact comment replies now sound like plain acknowledgements instead of describing internal plumbing.

Reworded auto-reply prompts sit behind artifact comments, which are off by default.

Feature flag
tengu_teal_corbel 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 v2.1.227: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.227. It isn't a statement about your account. What a flag value here can and cannot tell you

CLAUDE_CODE_ARTIFACT_COMMENTS
What

The prompt that composes automatic replies to artifact comments used to have Claude say a request was flagged for the artifact's session to pick up. It now asks for a plain in-progress acknowledgement and forbids mentioning sessions, threads, flags or pick-up machinery, in both the reply-only and edit-capable versions. A thread that is already resolved gets a brief reply and stays resolved. Gated by artifact comments (tengu_teal_corbel or CLAUDE_CODE_ARTIFACT_COMMENTS).

Evidence

Never describe how the request gets handled behind the scenes

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.227 →