By swapping out the bolded variables below you can create links on external sites that will automatically add cart items on your ticketing site and send a user to the checkout. The bolded variables need to be updated:

yoursite.ticketsocket.com/api/shoppingCart/add/?cartTasks[TYPEID][eventId]=EVENTID&cartTasks[TYPEID][typeId]=TYPEID&cartTasks[TYPEID][quantity]=QUANTITY&goToCheckout=1

Important Variables

Your ticketing URL: This is your full ticketing URL 

TYPEID: Your ticket type ID  can be found to the left of the ticket type name within the event level ticket types list

EVENTID: Your event ID can be found in the URL when you are editing an event. for example, when editing an event your URL may be example.ticketsocket.com/admin/plugs/eventManager/edit/general/35 where 35 is the event ID

QUANTITY: This is the number of tickets to be added to the cart