Here are some resources that will be helpful for getting started with plugin development
Our IRC channeledit
Many Kibana developers hang out on
irc.freenode.net in the
#kibana channel. We want to help you with plugin development. Even more than that, we want your help in understanding your plugin goals so we can build a great plugin system for you! If you’ve never used IRC, welcome to the fun. You can get started with the Freenode Web Client.
Some light readingedit
Check out the plugin generator to kick-start your plugin.