~10 min read
With TrueLayer picked as the data provider (see the previous post), the next step was the unglamorous part every API integration starts with: get an account, register an application, get credentials, and figure out exactly what permissions to ask for. This post is that setup, written down properly so I don't have to reconstruct it from memory the next time I need to do it again - for a second project, or when the production credentials need rotating.
Signing up and creating an ap~10 min read
I wanted one place to see everything I was spending, across six accounts at five banks that I actually use day-to-day: a Nationwide current account, a Nationwide credit card, Monzo, Tesco Bank, Virgin Money, and an M&S Bank credit card. None of these banks talk to each other, none of them export in a format the others understand, and I was tired of opening five apps to answer "how much did I actually spend this month." So: a personal finance aggregator. Pull everything into one SQL 
