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 v2.1.228 Home All releases olderv2.1.227 v2.1.229newer
Claude Code v2.1.228

Ten more subsystems moved from module globals to per-session state

Under the hood
Useful2 Signal2
Session State

Diagnostics, plugin scans, agent commands and MCP listings are now built per session rather than once at startup.

What

Language-server diagnostics, plugin and skill scan caches, the agent command store, MCP listing state and others are now created lazily per session rather than once at import. Several reset methods that cleared the old globals were deleted, and many functions gained a leading session argument.

Evidence

scanUncertaintyHoldSids

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 v2.1.228 →