ZeroThreeEight

[twilit ravine]

Hi again 👋 can you elaborate a bit more? Did you run into problems while following the steps in the document provided previously, or did it not accomplish what you are looking for?

[dire plume]

Hi yes, so I looked into the docs you sent, it was about starting checkouts with promo's and thats clear to me

But adding a discount to an existing subscription, for only the next coming cycle

[twilit ravine]

For that you use this endpoint to make a request to update the Subscription, providing the ID of the Coupon you created to the coupon field:
https://stripe.com/docs/api/subscriptions/update#update_subscription-coupon

[dire plume]

I think I know enough then

Thanks!

One more question

Is there a way to check if someones payment is the first payment

and which webhook would that be

[twilit ravine]

First payment of a Subscription? You can check the billing_reason on the Invoice that gets created. It will hvae a value of subscription_create if it's the first Invoice of a Subscription:
https://stripe.com/docs/api/invoices/object#invoice_object-billing_reason

invoice.payment_succeeded would be a good Event to catch a successful payment on an Invoice.

[dire plume]

invoice.payment_succeeded ✅

but, billing reason will have subscription_create only the first time?

[twilit ravine]

Yup, afterwards it will have other reasons, such as subscription_cycle.

You can use test clocks to move Subscriptions through their full lifecycles quickly so you see exactly what Events are generated and when:
https://stripe.com/docs/billing/testing/test-clocks

[dire plume]

Cool, thanks

[twilit ravine]

Any time!