Open Cloud Inventory and Groups API, Plus an Upgraded Doc Site

Hello! I tried posting this in the Feature Requests part of the forum, but I cannot post there, so I had to redirect my feature request here.

Currently, the only way to see when a user has purchased or obtained an item is to use the Economy API, which is undocumented, unsupported, and requires the user’s cookies. Knowing when a user obtained an item could be helpful in certain cases. For instance, if you have a game pass that you sell seasonally, but you want to reward users who bought it earlier than other users. It would be nice if this data were made available in some way, even if it would require authorization from the user.