Massive retrieval of publications is possible on Serval using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH).
Queries must contain a verb and possibly parameters. Here are some examples of access:
When there is too much data to be displayed in a call, the result page contains a cursor that allows access to the next page.
... <resumptionToken cursor="0">X27391577/1</resumptionToken> ...
You must then add a “resumptionToken” parameter to the called URL and assign that value to it. There must be no other argument except the verb previously used.