But as mentioned by another reader, that would almost certainly violate the ToS of the web property subject to the automation. It's almost indistinguishable from session hijacking as far as that property is concerned. And it certainly isn't intended usage.

Indeed, it would likely be classed as a violation according to your own ToS.

It's a delicate matter as we all deploy personal automations that break ToS without us really giving it a second thought. But as a commercial endeavour, it feels brazen, I'm sorry to say.