Which APIs are used with "Shopify card vault"?

Topic summary

Core Question:
The original poster seeks clarification on which specific APIs are used to implement Shopify’s card vault for payment processing. While Shopify’s documentation outlines the steps, it doesn’t explicitly name the API endpoints required.

Partial Answer Provided:
One respondent suggests using the Checkout API (part of Shopify’s REST Admin API) to:

  • Create a checkout object
  • Update checkout with payment session ID
  • Complete the payment

However, they note the specific API calls aren’t explicitly stated in the documentation.

Unresolved Issue:
A key question remains unanswered: Which API safely passes credit card information to Shopify’s card server (referenced in step #4 with an attached screenshot)?

Current Status:
Multiple users are stuck on the same implementation challenge. The original poster has searched extensively across support channels without finding a solution. The discussion remains open with no definitive answer on the complete API flow and endpoints needed for card vault integration.

Summarized with AI on November 11. AI used: claude-sonnet-4-5-20250929.

Hey! @bovojon any luck? I am also stuck, unable to get my head straight with the card vault and the whole session creation process. Have you cracked it? if so please share the flow and APIs/ndpoints involved. thanks