To get started with SignalK plugin development, you can follow this guide. Whan a plugin's configuration is changed the server will first call stop to stop the plugin and then start with the new configuration data.

(optional) property or function uiSchema: The returned structure defines additional UI components or effects.

property or function schema: The object returned from this property or function defines the configuration of the plugin and is used to generate the configuration user interface for the plugin.Here you typically unsubscribe from streams, stop loops that fetch data or close devices. function stop(): This function is called when the plugin is deactivated.Here you'll setup your plugin, subscribe to streams, connect to devices or start async loops to fetch data. function start(configuration, restartPlugin): This function will be called when the plugin is activated or when the server starts and the plugin is activated.The plugin module must export a single function(app) that must return an object with the following: are npm modules that become available to the server when they are published in the npm repository with the signalk-node-server-plugin keyword.can be webapps as well: a webapp's /public/ directory is mounted under server's root under module id.start in disabled state - you need to enable them after install.are installed, activated/disabled and configured from the server admin UI.Signal K Node server plugins are components that run within the server and add some functionality to the server.

Signal webapp