Running on a standalone system

I’ve just started looking into using for one of my Angular web applications. I have created a username and have an API key to include in my code. My question is whether is trying to somehow validate my username and API key to an external site. My application runs on an isolated network that has no internet connection. Will it be possible to use or is there something that I need to configure differently with it to run on a standalone system?

Thank you.

Plotly will run totally standalone. I even run in a c# desktop program. make sure you are using a downloaded plotly-latest-min.js, and are not trying to download from the CDN.