Yep, that is close to what I am after. It would be good if it survived the login process if the user is not yet logged in, but it doesn’t currently
I don’t see how it can be extended to support a file (or image) upload though, so that may be a problem.
Can images/files be uploaded separately via the API? I (obviously) can’t store the master key in the application, but I could probably do something where the application uploaded the file to a web service I define, which in turn uploads it to the forum, and then have the topic body reference that uploaded file. A bit ugly, but perhaps doable. Does the API allow uploading files?