Separate Field Scoring Protects Unused Tools When Agents Pool Tool-Use Experience

Abhijit Chakraborty · 2026 · arXiv

DOI: 10.48550/arXiv.2610.30867 · open-access PDF

Abstract

Agents that call tools from a shared catalog can pool what they learn about which tool serves which request. We measure what pooled usage examples do to tool retrieval, reporting separately the held-out tools, for which no agent has usage, and all other tools. Adding usage examples to the index as extra entries for used tools raises Hit@5 (whether a gold tool is in the top five) for those tools and lowers it for held-out tools, by a large margin on two of three catalogs and with both embedders we tested. Giving used tools the same number of equally long entries filled with other tools' text lo

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