Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
MessagesArea: what it touches
Internal ChangesKind: in v2.1.301,
Internal ChangesSection of the release
Unclear Whether this changes behaviour or is only a reorganisation is not shown.
What
Claude Code used to rule out messages that carried an error from a tool call using a check written in place. That check is now done by a shared routine instead.
Why
This may be a tidy-up with no visible effect, though it could change which messages count as ending a turn after a tool runs.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhether this changes behaviour or is only a reorganisation is not shown.