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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 v2.1.233 Home All releases olderv2.1.232 v2.1.234newer
Claude Code v2.1.233

New hidden flag --watch-artifact

Use it now
Useful3 Signal5
Artifacts Notable not in their notes

A hidden flag lets a session watch an artifact for new versions and comments, with an option to disarm auto-reply.

--watch-artifact--watch-artifact-no-autoreact
What

A session can now watch a Claude artifact by id or claude.ai URL and be notified when new versions and comments arrive. --watch-artifact-no-autoreact starts the same watch with auto-reply disarmed. Both are registered hidden, so they do not show up in --help. Startup refuses them in non-interactive, print, --sdk-url, --init-only and redirected sessions, and in sessions attached to a remote environment, each with its own error text.

Details
  • A malformed value produces an artifact-id/URL error; a URL belonging to a different environment is rejected against the one you are signed in to.
  • Neither flag string appears in the previous build.
Usage
claude --watch-artifact https://claude.ai/...
Evidence

Error: --watch-artifact is not available in sessions attached to a remote environment \u2014 run it in a plain local session

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 v2.1.233 →