If like me you are used to reboot, press ctrl+b and copy-paste iPXE commands on your dedicated or cloud servers, you should be happy to use the mini tool I wrote for Scaleway.
In less than 50 lines of code, the program will
(re)boot your server
attach to the server serial
automatically press ctrl+b
run user lines, for example “chain –autofree http://boot.netboot.xyz/menu.ipxe”
The script is quite simple and easy to hack for your specific needs
Code on GitHub: https://github.com/moul/scaleway-ipxe/