Skills
Nested subagents can now spawn their own subagents — background trees capped at 5 levels deep
Claude Code's June 2026 update lets a subagent spawn its own subagents, with a live panel showing the full descendant tree and a path back to main. Background trees are capped at five levels to prevent runaway concurrency; foreground chains are self-limiting at any depth. For builders this turns flat fan-out into true hierarchical delegation — a supervisor agent can decompose a task and let each child decompose further without you wiring a custom orchestrator.
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