My dream was to have a "custom HTTP client" for every website. Instead of one browser for all sites, I write "adapters" for them that scrape the data into my own schemas. Maintaining this was far too much work back then, but now that I've got AI... I think I might try it.
Do you mean the rules like
*##+js(acis, document.oncontextmenu)
>reverse engineering websites and directly using all the internal APIs their own javascripts consume.
Interesting. By userscript or some other way? I've run into a number of situations where I either can't find a pointer to the internal js, or if I do find one, the browser or something ends up preventing me from accessing or modifying internal state with some sort of permission error. The latter might just be React though.
I'd be very interested in looking, if you have open sourced any of this.