Can we use the Epic Online Services for a browser-based game?

I am looking at the Epic Online Serviceswhich seems really cool. Basically I was looking for some sort of free matchmaking service for my multiplayer game. And this seems ideal.

What I’m wondering is if there is a Javascript API. For example if you made a WebGL game that plays in the browser and you wanted to add matchmaking, achievements etc.

Or will the code only work on desktop games?

I wouldn’t even care if Epic put ads in it or whatever. But a free service would be cool. But will it work with javascript?