Author here.

For those who don't know what RPC is, RPC (Remote Procedure Call) denotes the practice of calling a procedure that is defined on a remote computer (or different process) as if it were defined locally on the same computer (or different process).

Wildcard fully abstracts away serialization and the transport protocol: you simply define a function and call it remotely.

Wildcard only supports JavaScript (Browser & Node.js) for now but it could in principle support all kinds of languages.