To enable AntiForgerySupport you need to add these to your c# backend. I add them to the OnInit method:

protected override void OnInit(EventArgs e)
{
        ServicesFramework.Instance.RequestAjaxScriptSupport();
        ServicesFramework.Instance.RequestAjaxAntiForgerySupport();
}

I then access it like so:

var sf = $.ServicesFramework(moduleId);
sf.getAntiForgeryValue();

I've been using the SPA template and have not found a solution for adding AntiForgerySupport into a SPA module without having an assembly attached. I fixed this by adding the above to my skins template which should provide this support on any page using that skin.

BTW you can use the token system to inject the module Id into your template like so (ModuleId & IsSuperUser are the only two supported):

<%@ Import Namespace="System" %>
<%@ Import Namespace="DotNetNuke.Entities.Modules" %>
<%@ Import Namespace="DotNetNuke.Framework" %>
<script runat="server">
	#region Event Handlers

	protected override void OnInit(EventArgs e)
	{
		base.OnInit(e);
	}

	protected override void  (EventArgs e)
	{
		base. (e);
                ServicesFramework.Instance.RequestAjaxAntiForgerySupport();
	}
		
	#endregion
</script>