AI Talks - Carl Lapierre: Intro to Building and Observing LangGraph Agents

Welcome to our eight-week series on practical uses of AI for software crafters. Each week, we will have an expert talking about their learnings in this new a rapidly evolving field. If you're excited to learn how these new tools can enhance and support your skills, please join us!

This series is hosted in collaboration with Software Crafters Montreal. https://guild.host/software-crafters-montreal

Description:

AI agents are everywhere, but how do you go from demo to dependable? In this talk, we’ll build agents using LangGraph, and take it beyond toy examples into enterprise-grade readiness.

We’ll start with context engineering concepts like: control flow, prompt engineering, prompt management and tool calling. From there, we’ll build an agent step-by-step, enabling contextual reasoning via Retrieval-Augmented Generation (RAG), and integrating tool use for dynamic task execution. We'll also cover agent observability with open source observability tools such as LangFuse to bring full observability into the decision our agents make.

Whether you're exploring AI agents or planning your first production deployment, you'll leave this session with the patterns, tools, and clarity to do it right.