Wech

1 - Put the com.vaccine-bot.daemon.plist file in your ~/Library/LaunchAgents/ folder
2 - To launch the bot : run launchctl load ~/Library/LaunchAgents/com.vaccine-bot.daemon.plist. It will run automatically every 30 sec and send you a notification on your mac when it finds a slot. Just click on the notification and you'll be redirected to the medical center.
3 - To stop the bot : run launchctl unload ~/Library/LaunchAgents/com.vaccine-bot.daemon.plist.
4 - Since thousands of people try to book the few spots available at the same time, you'll see spots appear / disappear then disappear / reappear so don't give up !