Does a Language Server Save Tokens for Coding Agents? A Measurement Methodology and Preliminary Study
Challenging the assumption that semantic LSP retrieval reduces token consumption for autonomous AI coding agents.
Coding agents spend most of their context budget on retrieval. Lexical retrieval (grep) is universal, instant, and zero-setup, but noisy: it cannot tell a definition from a call from a comment. Semantic retrieval via the Language Server Protocol (LSP) is precise and typed, but ne...
ArXiv CS.CL
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This research challenges the long-held assumption that semantic retrieval via LSP is inherently more token-efficient for coding agents than simple lexical search. The study proves that developers should favor adaptive routing strategies rather than relying on a one-size-fits-all approach to context management.
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