How to get prices from tradegg.it and the Steam APIs?

Question

I am trying to make a Chrome extension that gets the item's prices from tradegg.it and Steam market, and compare the prices.

I got stuck on how to get the prices. Do I need the auth info from the browser? Or will it be sent automatically by the browser because it's stored in cookies?

This is my first big project any suggestion or keywords will be much appreciated.

Answer 1

You can use JS localStorage/cookies to get the current logged in user, but I would suggest to use oauth if the website supports it