But I used to actually pull the CSV once a week and feed it to GnuCash. It's pretty good at auto-categorization.
Also I simplified my finances to only a couple of checking accounts and only one credit account (for car rentals).
There needs to be a lot of investment in training and safe defaults though. Most people are not ready to automate even a little of their banking like that.
I would even prefer banks had the option to push data to trusted feeds than having open APIs you could call on your own.
I definitely do not support an API for doing financial transactions. That will result in so much hacking and theft.
- people do not trust Plaid and Finicity - data is captive inside of bank portals - each damn CSV has it's own format