3. Routing
Mini-Project: Customer Support Router
A router that classifies incoming customer queries and routes them to specialized support agents (billing, technical, general).
Description
Routing classifies an incoming input and directs it to a specialized downstream handler. A router LLM (or rule-based classifier) examines the request and decides which specialized agent, prompt, or workflow should handle it. This enables separation of concerns and allows each branch to be optimized independently.
When to Use
- Multi-domain applications (e.g., customer support with billing, technical, general queries)
- When different input types require fundamentally different handling
- Systems where specialized prompts outperform a single generic prompt
- Building modular systems where new capabilities can be added as new routes
Benefits
| Benefit | Description |
|---|---|
| Specialization | Each route has a tailored prompt for its domain |
| Scalability | Add new routes without modifying existing ones |
| Accuracy | Focused handlers outperform generalist approaches |
| Separation of Concerns | Each branch is independently maintainable |
Architecture Diagram
flowchart TD
A[User Input] --> B[Router / Classifier]
B -->|Billing| C[Billing Agent]
B -->|Technical| D[Technical Agent]
B -->|General| E[General Agent]
C --> F[Response]
D --> F
E --> F
style A fill:#4CAF50,color:#fff
style B fill:#FF9800,color:#fff
style C fill:#2196F3,color:#fff
style D fill:#9C27B0,color:#fff
style E fill:#00BCD4,color:#fff
style F fill:#4CAF50,color:#fff