The LangGraph Cookbook provides ready-to-use recipes for constructing sophisticated AI agents by representing workflows as directed graphs. Each node can encapsulate prompts, tool invocations, data connectors, or post-processing steps. Recipes cover tasks such as question answering over documents, summarization, code generation, and multi-tool coordination. Developers can study and adapt these patterns to rapidly prototype custom LLM-powered applications, improving modularity, reusability, and execution transparency.