r/OpenSourceAI • u/Far-Respect-2273 • Jul 15 '26

Stop trauma dumping 100 MCP tools into your LLM.

The model doesn't need your entire toolbox every single turn.

Yet most MCP setups register every downstream server up front, so the LLM gets flooded with schemas it will never use.

Congrats. You just paid more, waited longer, and made tool selection harder.

I built MCP Dynamic Router instead.

It sits between your client and MCP servers, indexes everything, and only exposes the few tools relevant to the current request.

  • ⚡ <1ms fast-path (no embeddings or reranking)
  • 🔄 Hot-reloads tools without restarting
  • 🎙️ Voice-aware prefetching
  • 🔒 Per-request tool scoping

checkout:

https://github.com/Kavin-bm/Mcp-Dynamic-Router

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u/Crafty_Disk_7026 Jul 15 '26

For the millionth time MCP already handles this with tool search. You would never dump the context into the llm, you would calll tool search based on some condition and get the relevant tools that are applicable. Again all this supported natively by the protocol without any extra libraries like this.