Hermes Agent launches Tool Search to ease MCP tool tax
Summary
Nous Research has added a Tool Search feature to the open-source Hermes Agent. The new approach reduces MCP tool context bloat by loading tools on demand instead of all at once. That change cuts token overhead, lowers cost, and improves accuracy in typical deployments. The article also says the new three-step flow boosted Claude Opus 4 accuracy from 49% to 74% in testing. The implementation uses BM25 retrieval with a substring fallback to improve tool selection efficiency.
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