This document describes the execution and results of a survey into distribution APIs for MaaS. API owners have been encouraged to participate if they offer APIs that support the functions or if they were expecting to do so within a reasonable timeframe. Although there seems to be good coverage of European examples, survey responses cannot be treated as representative of the complete worldwide set of APIs, but provide strong indications of the totality of what exists, and the issues raised in terms of standardization and regulation. The survey has been carried out without any pre-determined agenda in terms of API policy or strategy. It has not been assumed a priori that a single API set could or should meet all multi-modal business needs. Comments are provided in respect of the impacts in standardization, but it was not considered appropriate to make any comments on regulatory implications, as this is not the area of competence for the CEN working group.