Are the public services located @ https://tasks.arcgisonline.com/arcgis/rest/services/Geometry/GeometryServer for general public consumption, and if so (or not) is there a license agreement somewhere documenting this.
For example, could an app developer but otherwise non-ArcGIS user or account holder consume services @ https://tasks.arcgisonline.com/arcgis/rest/services/Geometry/GeometryServer and still be in compliance with Esri's terms of use.
Related, is there a documented rate limit to those API endpoints.
