Interfacing between digital assistant applications and navigation applications

A system to interface among multiple applications in a networked computer environment, comprising:

• a navigation interface component executed on a data processing system having one or more processors to access a navigation application executing on a first client device to retrieve a plurality of point locations within a reference frame corresponding to a geographic region displayed in a viewport of the navigation application, each point location of the plurality of locations having an identifier;
• a natural language processor component executed on the data processing system to:
• receive an input audio signal detected by a sensor of at least one of the first client and a second client device;
• parse the input audio signal to identify a request and a referential word;
• and
• identify, responsive to the identification of the request, a point location from the plurality of point locations within the reference frame based on the referential word parsed from the input audio signal and the identifier for the point location;
• and
• an action handler component executed on the data processing system to:
• generate an action data structure including the point location identified responsive to the detection of the input audio signal;
• and
• transmit the action data structure to the first client device to cause the navigation application to initiate a navigation guidance process using the point location.