This is an extension that, very simply, allows adding webhooks to recent changes.
From the root directory of your wiki, run the following commands:
cd extensions
git clone https://github.com/Kenny2github/RecentChangesWebhooks.git
Then add the following line to your LocalSettings.php:
wfLoadExtension( 'RecentChangesWebhooks' );$wgRCWHookUrls - an array containing the URLs of the web hooks to be triggered when a change has been made
$wgRCWHookType - either realtime or job to determine whether the webhook should be run synchronously with page edits or in a job