Earlier quoted context omitted.
There are tons of third-party doing this for you, and I'll just cite one because it makes sense here: https://www.budgea.com/ . It's much like any other, except they're a commercial entity that was born out of an open source project called weboob ( https://weboob.org/ ). That project aims at getting information out of website without having to use websites' javascript or restrictive APIs; it's still browsing the web,…
Don't know about GP, but I don't want to touch any third party. Beyond data concerns, I haven't seen one that would provide me with necessary amount of control (which amounts to being able to run SELECTs against my finacial data and graph them how they like). Thanks for the link to weboob project, I haven't seen that one. boobank looks much more like something I want to have, though I can't find anything on how it wo…
Weboob relies entirely on web scraping: like I said, it's a form of browsing the site, just not with the usual browser. I do agree that services should provide APIs, but webood is targeted at websites won't/don't want to do it.