Reduce AI Agent Costs with Semantic Tool Selection

AI agents waste tokens sending all tool descriptions on every call and pick wrong tools as they scale. Semantic tool selection with FAISS filters to the top 3 relevant tools per query, cutting tokens by 89% and improving accuracy.

AI AgentsSemantic Tool SelectionFAISSToken Optimization

Speaker

Elizabeth Fuentes Leone

Elizabeth Fuentes Leone

Developer Advocate

Resources

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Presentation Deck EN (PDF)

English slides from the talk

Presentation Deck ES (PDF)

Spanish slides from the talk

Reduce Agent Errors and Token Costs with Semantic Tool Selection

Blog post with detailed walkthrough and code examples

Reduce errores y costos de tokens en agentes con seleccion semantica

Blog post en espanol

Demo: Semantic Tool Selection

Complete 29-tool travel agent with FAISS filtering

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Strands Agents SDK

Framework for building production-ready multi-agent systems

Internal Representations as Indicators of Hallucinations in Agent Tool Selection

Research: how LLMs internally represent tool choices

Solving Context Window Overflow in AI Agents

Research: impact of context size on tool selection accuracy