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

Per-session state moved into state-container objects

Under the hood
Useful1 Signal1
Session State

Session state variables were gathered into containers so a session resets as a unit.

What

Dozens of module-level variables holding session state were replaced by fields on singleton container objects, so a session's state is now reset as a unit rather than one variable at a time. No behaviour changes.

Details
  • transcript and session state now exposes fields such as the session isolation latch and agent name, and methods including clearInternalEventWriter and setRemoteIngressUrl
  • the old catch-all app-state object was renamed, and its init JSON schema, scheduled-tasks flag and prompt cache allowlist moved to dedicated modules
Evidence

clearInternalEventWriter

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 →