Build AI Apps with LangChain.js

About this course

Learn the basics of LangChain.js and build an internal company knowledge base using retrieval from a vector database. This hands-on course takes you step by step through the process of building AI-powered applications using LangChain. You’ll start with an expert-led introduction by LangChain’s lead maintainer, Jacob Lee, giving you a strong foundation straight from the source. As you progress, you’ll: - Build app flow diagrams - Set up databases with Supabase - Refine text processing techniques - Craft powerful prompt templates - Develop starter code - Integrate logic chains for data retrieval and processing - Design a functional user interface—bringing your AI project to life Each module is designed to sharpen your coding skills with interactive challenges that push you to apply what you’ve learned in real-world scenarios. The course wraps up with an exciting solo project: building your own personal assistant app, solidifying your expertise in AI app development. With its deep focus on LangChain, this course gives you hands-on experience with cutting-edge AI tools, preparing you to build the next generation of intelligent applications.