Architect

Sep 20, 2026 · Artificial Intelligence

Workflow in Multi-Agent Systems: Code-Controlled Routing, Node Checkpoints, and Replayable Pipelines

This article explains the Workflow architecture for multi-agent systems where code controls routing over fixed paths while agents handle node-internal reasoning, detailing checkpoint placement at node boundaries for retry/pause/recovery, required node output fields, event logging, and a comparison of how LangGraph, CrewAI, Microsoft Agent Framework, OpenAI Agents SDK, and Claude Agent SDK express such workflows.