Live demo
Try the authorizer
The card rejects anything you didn't authorize.
The limit lives in the card, not in the prompt. Every purchase is authorized only within the merchant, amount and validity you set — everything else is rejected by default.
Try it in 1 click
cardia · demo
# active permission: OpenAI · max $250,000 · valid
$ pick a scenario ↑ and watch the authorizer decide ▋