User
Installation Hotkeys Audio Output Selection Last.FM Voice Controls
Developer
Setting Up a Developer Environment JSON API WebSocket API keyboard_arrow_right Connecting keyboard_arrow_right Controlling keyboard_arrow_right API Version keyboard_arrow_right Lyrics keyboard_arrow_right Play State keyboard_arrow_right Playlists keyboard_arrow_right Queue keyboard_arrow_right Rating keyboard_arrow_right Repeat keyboard_arrow_right Search Results keyboard_arrow_right Shuffle keyboard_arrow_right Song keyboard_arrow_right Time

Documentation

WebSocket API - API Version

The current version of the WebSocket API

Data recieved in the API_VERSION channel will have a payload in the format
Channel Payload 

"payload": String, // Current API Version as a SemVer string

The String will be a semver compliant version string for the WebSocketAPI. You should use this to determine if your app is designed to handle the current API syntax.