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MCP tool retrieval improved from 50% to 93%, but agent tool-use grades did not improve.

I've been investigating tool discovery and context management for AI agents, using an experimental MCP gateway and an OpenCode harness running "gpt-oss:20b-cloud". In an offline evaluation over 300 catalog-derived queries, enhanced retrieval improved top-1 recall from 50.3% to 93.3%. However, in a…

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  1. 2026-11-01 18:24 · DEV Community — AI
    MCP tool retrieval improved from 50% to 93%, but agent tool-use grades did not improve.

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