Use  www.amsat.org/track/api/v1/passes.php?objects to get a list of object name/object number pairs.

Select a name from the list returned from above and use a Maidenhead grid square to specify the location.    This will give you summary info on the next 10 passes for that location.
www.amsat.org/track/api/v1/passes.php?location=JN42&object=ISSThis API is not stable yet. Suggestions to webmaster@amsat.org