There are two modes:
Documentation for v1.0 - RESTful WebAPI
Documentation for v0.1 - test WebAPI
Swagger UI (obsolete, will be removed)Download CPlugin.WebAPI.Realtime.ts typescript interface file to get all interfaces and classes used.
Official Microsoft documentation for SignalR client using Javascript here
Feel free to check source code of pages below to get general idea about SignalR/WebSockets connection.
simple example can be found here.
MT4 SignalR example, download it, put correct settings and run on your own
MT4 SignalR streaming example, download it, put correct settings and run on your own