langgraph-graph-api (Python)

name: langgraph-graph-api description: Building graphs with StateGraph, nodes, edges, START/END nodes, and the Command API for combining control flow with state updates

Overview

The LangGraph Graph API allows you to define agent workflows as directed graphs composed of nodes (functions) and edges (control flow). This provides fine-grained control over agent orchestration.

Core Components:

• StateGraph: Main class for building stateful graphs
• Nodes: Functions that perform work and update state
• Edges: Define execution order (static or conditional)
• START/END: Special nodes marking graph entry and exit points
• Command: Combine state updates with dynamic routing

Decision Table: Edge Types