That's sounds like a scary question.
I would ask them to tell me what they need/want to do. Are they looking to pass one chunk of data or are they looking to do more of a peer-to-peer communication.
ESP Agents do not communicate directly with other agents.
Without ESP can they pipe the output from Job 1 on Server A to Job 2 on Server B?
What is the Operating System type that they need to do this on?