FlareClusterer in AGOL?

[AmberTobin]

I have overlapping points at a single location. I need to keep the point locations' integrality so the disperse marker tool is not an option, especially in NYC where slightly moving a marker will place it on the wrong building. Instead, I want to the user to be able to click on a location with multiple points and have the points flare out. Is this possible in AGOL? Its available for Microsoft Silverlight but I am not a Silverlight developer: Working with Clustering.  

I did find on GitHub: ArcGIS javascript custom graphics layer. Create clusters...with flares but I am not a javascript developer with access to a Server to host a custom application. It would be nice if this was a built in function to AGOL.