Ask HN: How to access my bank account using Open Banking?

My bank (in the UK) has recently switched to Open Banking / PSD2 and switched off their old API. I was using their API to access transaction data and feed that into various scripts to automate some of my accounting.

They suggested I can use Yapily (https://www.yapily.com/) in some cases, but the documentation for that says I need to be FCA registered. All I want is an API for my bank account, not the bank account of anyone else.

Am I missing something here?