Decision Gates

Hardcoded if/else logic (checking keywords) is brittle. The power of AI is using an LLM as a "Decision Gate".

The Router Node

Create a tiny node whose only job is to classify the intent. Prompt: "You are a router. The user said: {input}. Respond with either 'SALES' or 'SUPPORT'."

This node doesn't answer the user. It just outputs a classification token. The Conditional Edge then reads this token to route the graph.

graph TD
    Input --> RouterLLM
    RouterLLM -- "SALES" --> SalesAgent
    RouterLLM -- "SUPPORT" --> SupportAgent