Learn How to Build Tool-Calling Agents with LangGraph

AI ENGINEER ROADMAP [ 🚀 learn AI Engineering in 2025 ] ► https://zazencodes.com/ DISCORD [ 🎭 come say hi ] ► https://discord.gg/e4zVza46CQ PATREON [ 💵 tip jar ] ► https://patreon.com/ZazenCodes SOURCE CODE [ 💾 ] ► https://github.com/zazencodes/zazencodes-season-2/tree/main/src/ai-scientific-research-agent 0:00 - Intro 0:50 - Physics Research Agent Demo 5:26 - Basic ReAct Agent Workflow 6:42 - LangGraph Low-Level ReAct Agent Implementation 12:34 - Building the Agent Graph with LangGraph 14:22 - Checkpointing with LangGraph 15:05 - LangGraph arXiv Agent Demo with Claude Sonnet 17:59 - LangGraph Agent Demo with Ollama "llama3-groq-tool-use" 21:47 - Building with Tools in LangGraph 26:59 - arXiv Search API + LaTeX Agent Tool Use 30:00 - Outro