Upstash does not require credit card for Free database. But for standard and premium databases, you need to add at least one payment method. To add a payment click to the
Payment Method link on the left sidebar. In the screen click on
Add Your Card button. Then enter your name and credit card information the following form:
You can enter multiple credit cards and set one of them as the default one. The payments will be charged from the default credit card.
Upstash does not store users' credit card information in its servers. We use Stripe Inc payment processing company to handle payments. You can read more about payment security in Stripe here.