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Parallel Tool Calls and Fan-Out (ANSWERED)

Scenario BasedAI AgentsMedium15 min read

Medium AI Agents interview question on parallel tool calls and fan-out — architecture, trade-offs, eval, and production patterns.

TL;DR — Quick Answer

Independent tools (fetch 3 URLs) should run in parallel to cut wall-clock latency. Handle rate limits, partial failures, and deterministic merge order in the prompt.

The Interview Question

Explain parallel tool calls and fan-out. How would you apply this when building production AI agents? Cover architecture, safety, and evaluation.

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