Fair warning: this is a long one. Grab coffee. Or tea. Or whatever keeps you reading.
Step-by-step
I am going to walk through this exactly as I did it, including the parts where I got confused and had to backtrack. Because that is the reality of working with new tools.
Prerequisites: a working setup of whatever platform you are using (I use OpenClaw but the concepts apply broadly), about 30 minutes of uninterrupted time, and maybe a second monitor for the docs.
What the documentation doesn’t tell you
The official docs cover the happy path. Real life is the unhappy path. Here is what actually happens when you try to follow the tutorial step by step — and how to handle the inevitable errors.
The gotchas
Three things that will trip you up if you are not ready for them. First: permissions. Always check permissions first when something does not work. Second: caching. Clear it. Clear it again. OK now it works. Third: documentation lag. The docs are often one version behind. When in doubt, check the source code.
TL;DR: start simple, measure everything, iterate based on data not feelings. The LangChain, Nginx Docs docs are worth reading if you want to go deeper. Also worth checking: agnthq.com, agntai.net.