Production AI Agent From Scratch | Claude + LangGraph + Docker

Description

Most AI agent tutorials show you a chatbot that calls one tool. That's not an agent — that's a fancy if-statement. In this video, I build and deploy a REAL production AI agent from scratch using the complete 2026 stack: Claude Sonnet 4 for reasoning, LangGraph for orchestration, ChromaDB for memory, FastAPI for serving, Docker for containers, Railway for deployment, and LangSmith for monitoring. What you'll build: → Tool Use layer: web_search, run_python, query_database → Two-tier memory: short-term (conversation) + long-term (vector store) → ReAct agent loop with LangGraph state machine (40 lines) → Production FastAPI server with streaming, auth, and rate limiting → Docker containerization + one-command Railway deployment → Full observability with LangSmith tracing Live demo at the end — real task, real Claude API, no cuts. ⬇️ Resources: GitHub repo (fork-ready template): https://github.com/thecodertheripst-code/ai-agent-demo.git LangSmith free account: https://smith.langchain.com Railway deployment: https://railway.app 📌 Chapters: 0:00 Hook — what a real agent actually is 0:30 The complete 2026 stack overview 1:10 Layer 2: Tool use (web_search, run_python, query_database) 1:50 Layer 3: Memory (ChromaDB vector store) 2:30 Layer 4: LangGraph orchestration loop 3:30 Layer 5: FastAPI production server 3:55 Dockerize + deploy to Railway 4:25 LangSmith monitoring setup 4:40 Live demo — multi-tool agent run, uncut 5:20 What's next: multi-agent systems 📺 RECOMMENDED WATCHING New to the channel? Start here to build your foundation: • https://www.youtube.com/watch?v=UobdxzZmM7A&t=5s • https://youtu.be/sMuvqEKW4dw?si=5SiLXjP40HtrSIjq • https://youtu.be/ZQNMvRFWFHc?si=RuL69WjWDHzbg9MC 👋 ABOUT THE CODER THERAPIST Welcome to The Coder Therapist. My goal is simple: to help you navigate the chaos of the AI revolution without the hype. I focus on: • Real-world Machine Learning applications (not just theory) • AI System Architecture (RAG, LLM Ops, Deployment) • Brutally honest IT career advice for the age of automation Whether you're a beginner trying to break in or a senior dev trying to pivot, this channel is your blueprint. ⚠️ DISCLAIMER The information in this video is for educational purposes only and does not constitute financial or career advice. All opinions are my own. Always verify code and documentation before using it in a production environment. This video uses AI avatar technology for presentation. All educational content, research, and insights are original and human created. AI tools are used for video production purposes only #AI #MachineLearning #TechCareer #TheCoderTherapist