1. A method comprising: by a hardware processor: polling, from an automated agent in an agent-side network, a server in a cloud-side network outside of the agent-side network for a request message to access at least one document management resource of the agent-side network via an interface between the agent-side network and cloud-side network, the request message originating in the cloud-side network; responsive to the polling of the server, downloading the request message via the interface between the agent-side network and the cloud-side network; and issuing the request message to the at least one document management resource to cause the at least one document management resource to access a document stored on a device of the agent-side network and perform an operation associated with the request message.