Qutebrowser already kinda does this. You can use environment variables to access most browser details in python user scripts. For example, QUTE_HTML points to f

Qutebrowser already kinda does this. You can use environment variables to access most browser details in python user scripts. For example, QUTE_HTML points to file containing current tab's HTML. It has been one of my favorite things about this browser as you can quickly write up easily maintainable user scripts in Python compared to whatever unmaintainable magic greasemonkey scripts end up being. See more: https://qutebrowser.org/doc/userscripts.html https://qutebrowser.org/doc/userscripts.html