Lookahead-R: Budget-Aware Tool Retrieval via Execution-Centric Planning
arXiv:2609.35811v1 Announce Type: new Abstract: Tool retrieval is a critical bottleneck for LLM-based agents operating over large, heterogeneous API ecosystems. Existing approaches face an inherent trade-off: semantic retrievers are fast but suffer from the semantic-functional gap, while execution-…
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- 2026-10-01 04:00 · arXiv cs.CL
Lookahead-R: Budget-Aware Tool Retrieval via Execution-Centric Planning