Create Checkout Session

This endpoint allows you to create a checkout session on Stripe for a given priceId. It will return a Stripe checkout url for you to redirect your customer to. This will take them to a Stripe hosted checkout page where they will make a payment and then be redirected back to your site. As part of integration, you will provide us with urls for both success and cancel scenarios. When calling this endpoint, you can also pass an arbitray set of query parameters which we will return to you on the success and cancel urls so you can use them for tracking or other purposes. We will also always return the productId and session_id (Stripe checkout session ID) to the success url for your use.