I use them to find product fitting my specific desired parameters. Stores and price comparison websites often don't give you filters on all of the parameters that they posses and don't display all parameters on the list views.

I also tell my agents to remove annoyances from websites I browse, rearrange the content so that it's easier for me to view. For example when somebody publishes a table where they compare their newly released AI model to others I tell my agent to highlight highest result for each benchmark in every table on the page. I could do it myself with a bit of JS but why bother if agent can write it for me. I added a functionality to my agentic browser that lets the agent make userscripts for me that I can trigger with a push of a button.

I also ask agents whether the specific information is on the page that I'm currently browsing in language I don't understand (or just among the clutter).

Once I asked agent to put more than a dozen items into a cart for me (which names I pasted) because the ecommerce site didn't have convenient way of doing that.

So basically Grease Monkey on steroids + TD;DR;whaat?

Local Qwen3.6 is smart to do all that but I have option to switch to remote stronger models.