While we provide copies of the documentation for the R80.x Management APIs online, sometimes you don't have Internet access.
Or, like in the case of the R80.20 EA, we haven't published them publicly yet
Turns out, we make this available on the management server using via the following URL:
This will give you the version of the API that is supported on your management specifically (versus the above link, which points to the latest).
For this trick to work, the Web API must be accessible from your IP address.
Otherwise, you will get a 403 Forbidden message from Apache.
The API can be enabled from the CLI using something like: