Don't be fooled by the "open banking" propaganda, we've had it in the EU for years and we're still scraping web apps like in the old days.
<Rant> I tried to get API access to my bank account and was told by my bank that Open Banking is not for physical persons. I tried to the same for my nonprofit and was told that only licensed PSD2 TPPs ("third-party providers") can use it. The national bank issues those licenses, but provides no information on what the process for obtaining one is. I called some friends and got in touch with someone at a major payment services provider, who explained that to get their license, the national bank insisted on them having essentially unlimited-coverege insurance - something no insusrer in the country was even willing to sell at any price. They managed to get the insurance from elsewhere in the EU and whole process cost them "six figures". Even after that, you still don't get full access to their own accounts, because the whole API is built on the idea of connecting customers with fintech apps, so there are a bunch of limitations intended for privacy and security that don't make any sense in a "I want full access to my own account" scenario. All the advice I got was "just keep scraping".
How the fuck do they dare call that "open" banking?!? </Rant>