I did not find it in API doc. I am looking for API to export an table. In Podio, it was done by batch process, an export endpoint would return an ID (batch). Then I would use the Batch endpoint (with return ID) to download the file (some polling). Podio export is always in a batch process, you can use the browser to see the result of your export request via UI or API, to check the status and then download file from those links.
There are few ways to expose Export endpoint; implement whatever suited your back-end.