[michaelt]

In general for systems like this, you can open the browser link from a different host.

For example, if I've SSHed from my laptop to Host A to Host B to Host C then need to authenticate a CLI program I'm running on Host C, the program can show a link in the terminal which I can open on my laptop.

[gpderetta]

Having to interact with the browser every time I need to ssh to a machine would be extremely painful.

If key forwarding works, that might be workable.

I'm extremely wary of non-standard ssh login processes as they tend to break basic scripting and tooling.

[michaelt]

These tools usually cache your identity, so you might only need to go through a browser once a day.