Replacing Checkout REST API by Admin GraphQL API

Payments + Shipping & Fulfilment
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1

Hi,

I have a Shopify app that builds a custom sales channel. This app uses these API calls to create checkout → create payment session → complete checkout.

  1. Create Checkout: POST https://${this.shop}/admin/api/2023-10/checkouts.json

  2. Create payment session: POST https://elb.deposit.shopifycs.com/sessions

  3. Complete Checkout with the payment session: POST

https://${this.shop}/admin/api/2023-10/checkouts/${checkoutToken}/payments.json

I know the Checkout API will be deprecated soon, and I must switch to the Admin GraphQL.

Could you please give me a link to the new APIs that I should switch to for step 1, step 2, and step 3?

Thank you.