I've published lots of content to ArcGIS Servers, and can always view what's there using the server url followed by arches/rest/services. From that I've been able to use REST services to access features and so on.
I now have content that's on ArcGIS Online and want to be able to access this in a similar manner. Via online my base URL is cbip.maps.arcgis.com.
Guidance at ArcGIS REST API says to put your server name in front of arcgisonline.com for your root folder. See attached screen capture) I assume the server name in this case is cbip, (e.g. cbip.arcgisonline.com/arcgis/rest/services) but apparently that's wrong.
I've tried numerous variations, but am stuck. Suggestions?