Josh!

[magic pewter]

Hello 👋
Not sure I completely understand the usecase 😅
Can you explain a bit more?

[vivid parcel]

absolutely! essentially we're working on a productivity web app where the user can put a pledge on their task (say $1 or $5) and is fined that amount if they don't complete that task the next day

[magic pewter]

AH, when you said you wanted to develop a "stripe app" I thought you're talking about Stripe Apps 😅
https://stripe.com/docs/stripe-apps

It is possible to build an integration such as this, you could place a hold on the payment method for the pledged amount
https://stripe.com/docs/payments/place-a-hold-on-a-payment-method

and then capture the amount based on the "fine"

[vivid parcel]

ah, that could work! Would it require card authorization every time it places a hold?

[magic pewter]

Yes, which is kind of the idea with pledges right? Or do you not want to place a hold?

[vivid parcel]

Optimally, since the user adds three tasks (each with a pledge) each day, we'd like to authorize a card during onboarding, and then only charge the pledge amount when a task is failed

(very new to payment integration, so apologies if i'm being unclear!)

[magic pewter]

In that case, you can collect the payment method and charge it later by calling the API 🙂
https://stripe.com/docs/payments/save-and-reuse

[vivid parcel]

awesome, thank you!

[magic pewter]

NP! 🙂 Happy to help