Create API script eBay /panel IPTV

Hi, I need to create a custom API script to connect my eBay account with my IPTV panel for generated the users automatically: When the item sold on eBay, he must do these tasks: - Read the sell information on eBay. - Access to the IPTV platform using username and password. - Generating a new IPTV user according to the period chosen during the sale on the eBay. - Fill in eBay information sales, such as your username the IPTV platform. - Sending an email to the user's inbox and eBay message box with a message containing the new IPTV user. - Putting an option "Sent on eBay" and sending a positive evaluation.