8 Agentic Patterns in Practice: One 999 Call, Eight Different Agents
A 999 call comes in: a 3-storey building is on fire, casualties are reported, and High Holborn is gridlocked. The Incident Commander has roughly 90 seconds to answer four questions. Which hospital can take burns patients — and is it under pressure? How many pumping appliances does the NFCC minimum require for a multi-storey structural fire? Which traffic corridor can the ambulances actually reach? And does this cross the threshold for a formal Major Incident declaration?
Which agentic pattern you use to support that decision changes everything — not just how fast the answer arrives, but whether the answer is auditable, protocol-compliant, and safe to act on without a human double-checking it.
This is Part 2 of the JigsawFlux series on open-source agentic frameworks. Part 1 compared LangGraph, CrewAI, and AutoGen at the framework level. Part 2 puts eight specific reasoning patterns — ReAct, ReWOO, Plan-and-Execute, Reflexion, Hierarchical, DAG, Network/P2P, and Consensus — through the same incident and measures what each one actually does. The full source is at github.com/JigsawFlux/agentic-patterns.
