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Claude Code v2.1.172 adds sub-agent nesting capability, supporting up to 5 layers of nesting. It allows lower-level agents to automatically generate sub-agents to handle complex sub-tasks, and introduces usage scenarios, configuration methods, and common pitfalls.
The article discusses how the Qwen3.6-35B-A3B model exhibits different failure modes when used as a sub-agent under an orchestrator compared to solo use, particularly due to its MoE architecture and the lack of validation layers, leading to undetected errors.
Tips for using Grok Build to manage multiple machines via SSH and tmux sessions, as shared by Yun-Ta Tsai.