PXWEB is a common web API used by many European Statistical agencies to disseminate official statistics. The pxweb package facilitates connections and usage of these APIs.
The decription of the PXWEB API here: https://www.scb.se/en/About-us/about-the-website-and-terms-of-use/open-data-api/ The official home page of PXWEB can be found here: https://www.scb.se/en/services/statistical-programs-for-px-files/px-web/