It doesn't seem to have a notebook interface.

Maybe someone can hook this into Jupyter as a Wolfram kernel?

https://github.com/WolframResearch/WolframLanguageForJupyter

Additionally many IDEs have support for Wolfram Language, e.g.

Eclipse: https://www.wolfram.com/workbench/ IntelliJ IDEA: https://wlplugin.halirutan.de/