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-wide mutable state gathered into containers

Under the hood
Useful1 Signal2
Session State

Skills, team context, MCP sockets and ingress tokens moved into resettable containers.

What

A large sweep moves file-level variables, maps and sets onto singleton objects reached through accessors, covering skills and commands, team context, MCP monitor sockets, swarm permissions, ingress tokens and the lazy-value helper. Nothing changes for users, but per-process and per-session state can now be reset in one go.

Evidence

bundledSkillSessionResetHooks

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 →