We've recently developed our own application that interfaces with the Xero API. Right now, we estimate we're making 1000 API calls on a busy day. This is well below the 5000 call limit, but we're expanding usage of the application and need to measure how many calls we make per day so that we don't inadvertently hit the limit.
I realise we could record this information on our side (and indeed we do, but it's not retrieval friendly yet as we haven't stood up a data warehouse), but is there a section in Xero where you can see a graph or tabular data of your recent API usage?