We developed an API, which allow you to build your own solution for the TripleLift AdPreviews creation\display\embedding. It's fairly simple and consists of 2 main endpoints, which allow you to build a solution similar to TripleLift embedded AdPreview Tool.
Before you start, please obtain the authentication token from the TripleLift integration team. You will use it for the requests authentication by sending with the X-TL-ADP-TOKEN header.