Which Metadata Matters for LLM Tool Selection in MCP? Evidence from Controlled Factor-Level Interventions
arXiv:2610.14334v1 Announce Type: new Abstract: In Model Context Protocol (MCP) systems, LLMs select tools from metadata rather than from their implementations. Names and descriptions summarize what a tool does, while the parameter schema specifies the fields a tool accepts and how they are organiz…
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- 2026-10-15 04:00 · arXiv cs.AI
Which Metadata Matters for LLM Tool Selection in MCP? Evidence from Controlled Factor-Level Interventions