JSON API Limitations?

Hi All,

I'm currently integrating web help desk in one of our GWT application using the json api.

But it seems that some key features are missing (IMHO). So, I just want to check if it's possible to do the following actions using the json api:

• Create a client (that I can do) and set a password (with no email interaction).
• Attach a document to a ticket.
• Search tickets by custom fields
• Create a location

If this can't be done using the json api, is there another way to do it?

Thanks