Polkadot.js API sync

Describe the problem:
Hi - I’ve searched a fair amount and can’t seem to find an answer to what should be a relatively straight forward question - how do I get an API key from polkadot.js so I can sync it to Koinly. Apologies if this has been covered! Thanks for any help.

Which exchange/wallet is this regarding?
Polkadot.js

How did you import data into this wallet?
Haven’t

What have you tried to fix this so far?
Searched the entirety of Google

Hi, I think you just create another DOT wallet and put as a key your public address. In this way, Koinly can read all your transactions. This is how I did it

Thanks Ricardo - hadn’t realised it was that simple. Much appreciated!