Re: Any details on the JSON API for FortiSandbox?
Did you try to open a support case ? Maybe there is no documentation about that.. (I hope for the moment and it's coming soon.. Some documentation isn't up to date..). Fortisandbox is a "new" product, so maybe they don't take time to write a documentation..
If I remember correctly, the Fortinet deelopper tools is only for Fortmanager..