You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SubagentsArea: what it touches
ImprovementsKind: in v2.1.293,
ImprovementsSection of the release
What
A background agent is a helper agent that keeps working while Claude does other things. After a restart, Claude Code tells the model what happened to such agents. Those notices used to always say to continue the agent with SendMessage. When the agent cannot be continued, they now suggest launching it again or retrieving its report instead. Related wording covers an agent that could not be restarted automatically and a report that cannot be retrieved from this session.
Why
The model is no longer pointed at a step that cannot succeed after a restart.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeFixed Claude being told to continue or message subagents with SendMessage in sessions, including resumed ones, where a host, a permission…
