Azure Resource Manager (ARM) template calling resource provider actions using POST

Question

Is it possible to call POST actions from an Azure Resource Manager (ARM) template? I have custom resource provider where I can create resources and call actions using POST as follows:

POST /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.CustomResourceProvider/resource/{resourceName}/actionName

Is there a way to call this action from a template?

Answer 1

No, there is none. ARM Templates can only do PUT calls, not POST.

Answer 2

I'm not sure whether I understand the question. I try to answer.

The operations available for each Azure Resource Manager resource provider. These operations can be used in custom roles to provide granular role-based access control (RBAC) to resources in Azure.
Refer to: Azure Resource Manager resource provider operations

It is desgined for RBAC to grant access. It seems can not be used for calling in ARM template.