LangGraph for AI Agents: State, Tools & Human-in-the-Loop

About this course

This course contains the use of artificial intelligence.

LangGraph is the runtime underneath a lot of the agent code being written right now, and most material about it starts in the middle. You get a working snippet, a diagram with four boxes, and no answer to the question you actually have: what is in the state after that node ran, and why did the field I was collecting into come back with one item instead of three.

This course answers that question first and keeps answering it.

Six modules build one frame and then spend the largest module on a single agent. You see the graph a team sketched before writing anything, the first version with four nodes and one conditional edge, the version where notes started disappearing, the one line that fixed it, the approval gate that stopped a four-figure order from going out unseen, the day the process died mid-run and the thread resumed, and the three things that changed before it shipped. Six versions, in order, each one a reaction to something that went wrong in the last.

Nothing here needs installing. There is no key to get, no database to run and no account to open. Code arrives as slices of eight lines or fewer with a note on the lines that matter, and every output on screen is the text that really printed when the example was run. The practice lessons are one or two minutes of thinking, answered in your chair, with the model answer shown immediately whether you worked it out or not.

What you get from that is the ability to read somebody else's graph and say what it does, to name the part that is broken when a field will not hold its contents, and to know which of the four layers of this stack a given problem belongs to. What you do not get is a deployed application, because building one is a different course and this one says so.

The last module is unusually honest for a course.

Read the full description on Udemy on Udemy (opens in a new tab)

Prices, discounts and availability are set by Udemy. We may earn a commission when you purchase through links on this site.