Sending URL link via HA Automation

I have been searching for solution but no luck so far. I have Security System which is connected to HA via MQTT. This security System gets disconnected from MQTT after couple of days, once I reboot the system it starts working for next couple of days. There are two ways to reboot the system Hard Reboot or I can use URL link which is :frowning: I’m trying to create an automation in HA so that HA ca reboot system via URL link every two-three or given date.
I’m fairly new to YAML and HA automation. Could someone please suggest me how to setup automation to fire up this link on given time?

I’ll really appreciate.