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 v2.1.234 Home All releases olderv2.1.233 v2.1.235newer
Claude Code v2.1.234

Session metadata is no longer written into the wrong transcript

You'll notice
Useful3 Signal2
Sessions

Switching sessions mid-write no longer lands metadata in the wrong transcript.

What

The background step that re-appends session metadata now checks, after its await, whether the session file or session id changed while it was waiting, and bails out if so. Without that check a session switch mid-write could land metadata in the transcript you moved to.

Details
  • The guard is opt-in through a new parameter on the re-append call, so existing callers choose whether the check applies.
  • The configuration cache now emits an installed event when a config is installed or written through, so other code can observe disk reads and writes.
Evidence

reAppendSessionMetadataAsync

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.234 →