mastering-langgraph

Build stateful AI agents and workflows by defining graphs of nodes (steps) connected by edges (transitions).

Simple Chatbot / Q&A The Quick Start above covers this. Add more nodes for preprocessing or postprocessing as needed.

Tool-Using Agent Agent that calls external tools (APIs, calculators, search) in a loop until task complete. → See references/tool-agent-pattern.md

Build stateful AI agents and agentic workflows with LangGraph in Python. Covers tool-using agents with LLM-tool loops, branching workflows, conversation memory, human-in-the-loop oversight, and production monitoring. Use when - (1) building agents that use tools and loop until task complete, (2) creating multi-step workflows with conditional branches, (3) adding persistence/memory across turns with checkpointers, (4) implementing human approval with interrupt(), (5) debugging via time-travel or LangSmith. Covers StateGraph, nodes, edges, add_conditional_edges, MessagesState, thread_id, Command objects, and ToolMessage handling. Examples include chatbots, calculator agents, and structured workflows. Source: spillwavesolutions/mastering-langgraph-agent-skill.