Claude Code (ish) via SSH to WordPress

I am having fun driving Claude Code for management of WordPress sites using the CLI via SSH login.
There are no results for SSH in this forum that I can see.

I should be prototyping for a client soon an “Agent as a Service” which does an e-commerce conversion.

Is there anything in the Pickaxe ecosystem which could help me deliver this as an automated service? Without asking the user for SSH keys? Perhaps that they install a small custom plugin of mine for verification?