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Plan or Retrieve First? A Scale Study of Tool Discovery Architectures

Tool-augmented LLM agents discover relevant APIs from large registries before planning execution, yet finite context windows prohibit injecting all tool definitions into a single prompt. The dominant approach, which we term Retrieve-then-Plan (RtP), embeds the user query and retrieves similar tools…

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  1. 2026-10-15 00:00 · Apple Machine Learning Research
    Plan or Retrieve First? A Scale Study of Tool Discovery Architectures

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