Your bank texts you after every payment. Set this up once and Arc reads each one on your iPhone, then keeps the payment waiting in your inbox for a quick yes or no. A few minutes, three steps.
The shortcut brings one automation, When I Get a Message Containing ‘a’, switched off. It must be on.
What the automation looks like after you tap Edit.
Not there (iOS 26, or the import didn’t bring it)? Make it by hand:
Why “a”? Shortcuts needs something to look for, and almost every text has one.
Notify When Run stays off in the automation (open it and tap Edit, top right, to check). Arc never opens or shows anything when a text arrives.
Paste one of your bank texts, or pick a sample. This uses the same rules Arc runs on your iPhone. Nothing you paste is saved.
Has money words: the shortcut passes it to Arc