Subagents
When Claude Code starts a subagent, through the Agent tool or a forked skill, the subagent writes a transcript of its own. It appears in snoop under the call that started it.
Expand inline
Press x on an Agent call to expand what its subagent did, indented under a │ rule.
The expanded events stay live while the subagent runs.
Press X to expand every subagent, nested ones included, and again to collapse them all.

Open in its own view
Press a on an Agent call to open the subagent’s transcript in a view of its own, with all four tabs.
Press esc to return to the parent session.
Search and files
Search and filters reach inside subagents.
A collapsed call whose subagent has matches stays in the list, marked ●.
The Files tab includes files the subagents touched, labeled with the subagent that touched them.
Waiting and stalls
A subagent can run for minutes, so snoop never reports an Agent call, or a forked skill whose subagent is writing, as waiting on you. See Alerts and notifications.