Dropbox API Integration in a web application

[AS131]

Dear Support team,

We would like to integrate Dropbox API into our web application. The usage scenario is this :

We maintain a designated Dropbox Account in which folders will be created for our (service) users interested in using Dropbox Integration feature.
Users upload files to this account and these will be picked up for further automatic processing by our web application.

Now we have a couple of queries regarding Dropbox API Usage and Business Plans :

Scenario 1) If we use a Dropbox Basic Account to create and share folders in the allocated FREE 2 GB space to our users, what will be the Limit / Costs for Dropbox API calls used to monitor and receive files uploaded to this Account ?
As per the information available in URL https://www.dropbox.com/individual/plans-comparison Basic Account is FREE, but regarding API usage for data transfers using
Basic Account, no information is provided.

Scenario 2) If we use any of the Business Account Plans and do not use additional licenses or any of the Business EndPoints (Teams or Groups or Team Members), will we be charged for additional users ?
We use Dropbox Java SDK to invoke API calls, so we are concerned as to how the API calls for Business Accounts are kept track ? How can we regularly monitor the number of calls ?
Is there a API Usage History available ?

Thanks in advance.

Regards

[Greg-DB]

1) Use of the API itself is actually entirely free. The API is built such that developers can create apps that (once in production mode) any Dropbox account can link to. The Dropbox accounts used with the app can be of any type (Basic, Plus, Professional, or Business.)

It is only if the owners of any individual (or group of) accounts want to upgrade is there cost involved. You can see more information on pricing and plans here.

2) Likewise, for Business accounts, the cost depends on the plan selected. You are not charged based on the actual amount of API activity. 

Note that there is a specific data transport limit for certain Business plans though. You can find more information on that here.