  We present zbMATH Open, the most comprehensive collection of reviews and
bibliographic metadata of scholarly literature in mathematics. Besides our
website https://zbMATH.org which is openly accessible since the beginning of
this year, we provide API endpoints to offer our data. The API improves
interoperability with others, i.e., digital libraries, and allows using our
data for research purposes. In this article, we
  (1) illustrate the current and future overview of the services offered by
zbMATH;
  (2) present the initial version of the zbMATH links API;
  (3) analyze potentials and limitations of the links API based on the example
of the NIST Digital Library of Mathematical Functions;
  (4) and finally, present the zbMATH Open dataset as a research resource and
discuss connected open research problems.
