Url commando

Does anyone know the MIDI command to send a URL? It's for controlling a relay. I've tried everything, but nothing works.
Or a command to start a script in python.

Why should you send a URL over Midi? This is a serial protocol which sends figures to suitable receivers. Or do you rather would like to get sort of a device send the URL after it has been triggered by a Midi command? Anyway your question doesn’t make too much sense . (At least to me.) There are hardware devices around with the respective connectors which can control built-in relays by Midi commands. No need for URLs there.

Why would I send a URL via MIDI? Because this is an Ethernet relay card that's controlled via URL.
This card switches an on-air (on-micro) light. It should turn on and off with the MIDI board's fader.

Okay, then it is definitely no mAirList issue. I’m off.