A Claude agent has 18 tools defined. The team reports increasing routing errors where Claude calls the wrong tool, despite all tool descriptions being clear and non-overlapping. What is the correct resolution?

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B. Restructure the system using hub-and-spoke architecture: a coordinator routes to specialized subagents, each with 4–5 focused tools. When tool count exceeds the optimal range, routing accuracy degrades regardless of description quality. The architectural fix is hub-and-spoke with specialized subagents, each holding 4–5 tools. Option A (better descriptions) may help marginally but cannot overcome the fundamental routing degradation that occurs at high tool counts. Option C adds a prompt-based pre-processing layer, which is fragile and adds complexity. Option D does not address the root cause.

A Claude agent has 18 tools defined. The team reports increasing routing errors where Claude calls the wrong tool, despite all tool descriptions being clear and non-overlapping. What is the correct resolution?

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