LangGraph Workflow Template (v39)

LangGraph workflow template v39 shows how to build state-based graph workflows for LLM apps.

It explains core LangGraph concepts such as nodes, edges, state, and checkpointing.

The document includes code for a simple RAG agent with document search, generation, and validation steps.

It also presents a multi-tool agent template with a plan, act, observe, and decide loop.

The approach highlights safer, more recoverable LLM workflows through explicit state management and stepwise transitions.