The third party Monzo uses is called TrueLayer. It's being discussed on the Monzo forums at https://community.monzo.com/t/monzo-labs-connected-credit-cards/6348

The third party Monzo uses is called TrueLayer. It's being discussed on the Monzo forums at https://community.monzo.com/t/monzo-labs-connected-credit-cards/63487 https://community.monzo.com/t/monzo-labs-connected-credit-ca... A couple of people have raised concerns about security and privacy.