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

Module-level caches moved onto objects

Under the hood
Useful1 Signal1
Session State

More caches, from the PR poller to the model catalog, became resettable objects.

What

A large sweep replaced module-level variables holding caches and one-shot flags with objects and classes exposing named accessors, across config file reading, the Chrome install prompt, the GitHub PR poller, sandbox startup, plugin hook hot-reload, iTerm teammate panes, artifact live subscriptions and the model catalog. Behaviour is largely unchanged; these caches are now per-instance and can be reset.

Evidence

AA.installUpsellBypassSuppressionCounted

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 →