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

Apple Machine Learning ResearchResearch source·
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Apple Machine Learning Research published a study examining how tool-augmented LLM agents discover relevant APIs from large registries, focusing on the challenge that finite context windows prevent injecting all tool definitions into a single prompt.

Written by AI from Apple Machine Learning Research's published text.

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“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.”
Apple Machine Learning Research, 15 Oct 2026, 00:00.

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