You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SessionsArea: what it touches
ImprovementsKind: in v2.1.302,
ImprovementsSection of the release
What
The reminder about lost tool calls now tells Claude that the session restarted during its previous turn. It is marked as critical, opens with "This session restarted during your previous turn.", and warns that tool calls from that turn may not have run. A tool call is Claude asking to use a tool, such as running a command.
The reminder is added only when a remote switch is on, and it is off unless the server turns it on. In readings taken before this release, the server returned off both for this site's account and for an anonymous one.
Why
It stops Claude from wrongly assuming that tool calls interrupted by a restart actually finished.
Read from
Feature flag
tengu_iterative_lightningOff in both readings
The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.
This account: off · anonymous baseline: off · compiled default in v2.1.302: off
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
