can't find "File Requests API"

Adding another +1, there is my scenario:

• I have Dropbox File request - everyone can upload whatever he/she want, but every upload is invisible to others.
• It is ok to upload whatever, but I want help upload users exactly what I need. And I need three things: request text, request area, and... attachments. And all of this should be uploaded to my account.
• I can imagine Single Page Application (HTML5+JavaScript) where user enters text, draws area on the map, selects attachmets and then upload it all to Dropbox.
• It would be easy with File request API

Without File request API I see two options:

1. Provide Oauth credentials in JavaScirpt code. It means that everybody could have acces to files uploaded by others (even delete it). So, it is not an option.
2. Develop server-side component for my app, which does notihing more than securely transfer data to Dropbox

Second approach is is what I'm doing right now. It is not cost-effective: you have to use SSL connection, and provide double transfer bandwidth (upload from client to my server and then transfer it to Dropbox). There is a lot server-side programming trics like upload limits on both sides (browser and server config). This all would be unnecessary if there will be Drobpox File request API.