friendica-addons/geonames/config/geonames.config.php

<?php

// Warning: Don't change this file! It only holds the default config values for this addon.
// Instead, copy this file to config/geonames.config.php in your Friendica directory and set the correct values there

return [
	'geonames' => [
		//username (String)
		//The geonames.org API username
		'username' => '',
	],
];