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Router Pattern — How a Lead Agent Decides

Domain 1 · 27% ~12 min English narration

Scenario anchor

Aaranya IT ke ek BFSI client ka scenario socho — ek large private bank jahan customer-support ka volume 40,000 tickets per day hai. Aap ne multi-agent system design kiya, lekin sabse pehla aur sabse critical question yeh hai: incoming request ko kaunsa specialist agent handle karega — billing, KYC dispute, loan servicing, ya fraud alert? Router pattern exactly yahi decide karta hai, aur agar yeh classification wrong hogi, toh downstream agents galat context ke saath kaam karenge — pure pipeline ka output compromised ho jaayega. Aaj hum samjhenge ki lead agent apna routing decision kaise leta hai, aur Claude Certified Architect exam mein yeh concept kahan aata hai.

Key Takeaways

The router pattern is a dedicated lead-agent layer that performs intent classification on incoming requests and dispatches them to the correct specialist agent — analogous to an API gateway applying routing rules before traffic reaches a microservice.
Routing decisions must carry a confidence score and a fallback path; without these two signals, misclassification silently degrades downstream agent output and is invisible in standard logging pipelines.
Least-privilege tool dispatch is a first-class design constraint — each specialist agent receives only the tools and context relevant to its domain, keeping the effective context window small and audit boundaries clean.
Memory anchor under exam pressure: Router pattern equals API-gateway routing rules for agents — classify intent, select route, enforce scope, handle fallback.

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