min.k4501

[sage sun]

hi!
answer to both questions I think is that it should be in breakdown at https://stripe.com/docs/api/checkout/sessions/object#checkout_session_object-total_details-breakdown I think, you have to explicitly expand that field to see it

[red canyon]

Let's take this a step further: how do we know that the coupon was redeemed in the webhooks that are delivered when the subscription and one-time payment are completed?

[sage sun]

it's the same answer

when you receive the webhook you can call the CheckoutSession Retrieve API, expand the total_details.breakdown field, and inspect the returned JSON from the API

[red canyon]

But for subscriptions, coupons can be applied multiple times. Can I check from the invoice.paid event if a coupon was applied to a payment generated by a subscription?

[sage sun]

sure, there is a discounts field on each Invoice which contains that information. https://stripe.com/docs/api/invoices/object#invoice_object-discounts