How to Build a Stateful AI Agent with FastAPI, LangGraph, and PostgreSQL.

📰 Dev.to · Shahzaib S

Learn to build a stateful AI agent using FastAPI, LangGraph, and PostgreSQL for scalable and persistent AI applications

intermediate Published 19 May 2026
Action Steps
  1. Build a FastAPI backend to handle user requests and interact with the AI model
  2. Configure LangGraph to generate human-like responses and integrate it with the FastAPI backend
  3. Design a PostgreSQL database to store user conversations and agent responses for stateful interactions
  4. Implement API endpoints to store and retrieve conversation history from the PostgreSQL database
  5. Test the stateful AI agent with example prompts and verify its ability to recall previous conversations
Who Needs to Know This

Developers and data scientists can benefit from this tutorial to create robust AI agents that can interact with users and store data effectively. This can be particularly useful for building conversational AI systems or chatbots.

Key Insight

💡 Using a database like PostgreSQL to store conversation history enables the AI agent to recall previous interactions and provide more personalized responses

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🤖 Build a stateful AI agent with FastAPI, LangGraph, and PostgreSQL for scalable conversational AI! 💡

Key Takeaways

Learn to build a stateful AI agent using FastAPI, LangGraph, and PostgreSQL for scalable and persistent AI applications

Full Article

Your AI demo worked perfectly in development. You opened a local notebook, wrote a clean prompt...
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