Background: I use OpenCode to do this.
Just tell it to use ssh from the shell. From there you can give it extra context to describe the target (if you know/care about it), or just let it loose and if the environment doesn't have what it expects it will "figure something out" - just the same as with your local env.
If there's some least common denominator you know about e.g. python it can streamline things if you tell it to just use that for everything.
I don't think you understand. I'm well aware it can run whatever command on bash. You're taking a significant risk asking it to do what it's doing via ssh, because it could easily forget that it's suppose to be doing ssh and do whatever locally.
The point is: opencode should have a specific deterministic tool like https://www.npmjs.com/package/node-ssh where commands can only be run; the environment can only be the remote; etc.
The last thing I would want is for it to suddenly forget it's suppose to be running commands as ssh and does something local.