Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SubagentsArea: what it touches
Internal ChangesKind: in v2.1.293,
Internal ChangesSection of the release
What
A subagent is a helper agent that Claude Code starts to do part of a job and report back. Its result can now carry an internal field that is false when the agent that started it cannot continue it with a follow-up message, because that agent has no messaging tool. When the field is absent, a follow-up is possible.
The message shown when a subagent ends without delivering a report is now assembled from shared text instead of naming the SendMessage tool directly. A short description, "Name for the spawned agent.", was also added.
Why
This affects how a subagent's result tells the agent that started it whether it can carry on the conversation with that subagent.
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…
