Solving Context Bloat: Semantic Tool Routing in Multi-Server MCP Environments

Agentic systems adopting MCP face a scalability hurdle: managing interactions with numerous servers exposing dozens or hundreds of tools. Injecting all tools into the model context, or ""context bloat,"" increases latency, inflates context window usage, drives up costs, and degrades reasoning quality.

This session introduces the MCP Gateway pattern, an architectural solution to context bloat. This pattern uses an MCP-aware routing layer to dynamically select and inject only the tools semantically relevant to a user request.

We will detail the design and implementation of semantic tool routing utilizing intent classification, embedding-based search, and lightweight prompt analysis. The talk will cover how this routing layer interacts with multiple MCP servers, maintains protocol correctness, and enables just-in-time tool discovery without overwhelming the model.

Attendees will receive a practical blueprint for building scalable, cost-efficient, and modular agentic systems based on MCP. The session emphasizes reusable patterns and reference architectures applicable across the broader MCP ecosystem, independent of any single vendor or runtime.Agentic systems adopting MCP face a scalability hurdle: managing interactions with numerous servers exposing dozens or hundreds of tools. Injecting all tools into the model context, or ""context bloat,"" increases latency, inflates context window usage, drives up costs, and degrades reasoning quality.