You can access to <yoursite>/episerverapi/downloadcatalogfeed as an admin, to download the last exported catalog
Hi I wrote an add-on that could suit your needs:
Let me know if you have any problems. Also its open source if you want to contribute.
We have a project where we want to have a look at the catalog export genereted by the schuled job, how can we access that xml file? We are using EPiServer.Personalization.Commerce 3.0.6.