A high-performance, open-source universal RPC framework. Client applications can directly call methods on a server application on a different machine as if it was a local object.
JSON-RPC is a stateless, light-weight remote procedure call (RPC) protocol. Primarily this specification defines several data structures and the rules around their processing. It is transport agnostic in that the concepts can be used within the same process, over sockets, over http, or in many various message passing environments.