FIX MY CSGO GAMBLING WEBSITE

Hi, I've a gambling website on CSGO, it's a video game, and to deposit stuff on my website in order to gamble ( roulette etc.. ) I need to use steam API to make the trade . If you want to understand how it works just read this similar project : https://www.freelancer.com/projects/Graphic-Design/Gambling-Site-Steam-API/ My website is closed to be finished ( I don't need anything about design etc, just steam trade system) Currently to deposit, gamblers needs to fill in a form ( they write what they want to trade ) and after I manually make the trade, but now I need something full automatic with steam API. If you have any questions, feel free to ask. Thanks