The coordinator agent has AgentDefinitions configured for all four specialized subagents, each with…

Question

The coordinator agent has AgentDefinitions configured for all four specialized subagents, each with appropriate descriptions, prompts, and tool restrictions. During testing, you notice the coordinator correctly reasons about when to delegate – it generates messages like “I’ll ask the web search agent to find sources on this topic” – but no subagent execution ever occurs. The coordinator then proceeds as if the delegation happened and continues with incomplete information. Logs show no errors. What is the most likely cause?

Accepted Answer

B. The coordinator’s allowedTools configuration doesn’t include “Task”, so while it can reason about delegation, it cannot invoke the tool required to spawn subagents.

Answer

A. The coordinator’s max_tokens setting is too low, causing the Task tool invocation to be truncated before the subagent type parameter can be specified.

Answer

C. The AgentDefinitions are configured correctly, but the coordinator’s system prompt doesn’t explicitly list the available subagent types, preventing the model from knowing they can be invoked.

Answer

D. Subagent context isolation means task descriptions from the coordinator don’t automatically reach subagents; you need to configure explicit context forwarding in ClaudeAgentOptions.

Question 36