I apologize in advance regarding the possible lack of pertinence of this query to this mailing list.  I did not find a good forum for Mapillary .. 

I would like to extract a geojson collection for images from Mapillary, using their API, filtered by either a Mapillary tag of "Fountain" or "Drinking Water". After that, I will feebly try to conflate to a geojson collection of fountains extracted from OpenStreetMap. 

The Mapillary API documentation seems to allow image extraction using a bounding box and a filter by user, but I could not see a way to query by tag. 

Best regards,

Stuart