Example of a YOURLS plugin installable with Composer.
In your YOURLS root: composer add-plugin ozh/example-plugin
How does it work? Thanks to the YOURLS custom installer that is listed as a dependency of this plugin, Composer will download this plugin and place it in your user/plugins/ directory.
(Or, of course, just as any plugin you could install it the regular way)
It does nothing, it's just a demo
WTFPL