[zokier]

ip4.me and ip6.me have /api endpoint for programmatic access

[SadTrombone]

The /api endpoint seems to return me a 301 error from the command line.

[ComputerGuru]

That’s a redirect, not an error. Probably to /api/ with a trailing slash. Or use the -l flag to curl to have it auto redirect.

[jffry]

  curl https://ip4.me/api/

works for me

[pepa65]

There, /ip is better.