Update payment method(credit card details) for a customer via shopify API

Topic summary

Main issue: Whether the Shopify API allows updating a customer’s credit card details directly without going through the Shopify Payments flow.

Context: The requester has an external (non-Shopify) application that needs to access and update stored credit card data and asks if this can be achieved via API, possibly in setups using third‑party payment providers.

Key unknowns: If any Shopify API endpoints or permissions exist to modify card-on-file data outside the Shopify Payments flow, and whether such access is supported when using third-party processors.

Status: No responses or solutions are provided. No API methods, steps, or workarounds are referenced. The question remains open, with no resolution or clarifications added. No code samples, images, or attachments are included.

Summarized with AI on January 23. AI used: gpt-5.

Hi Guys Do you know if there is a way to update the credit card details for a customer via shopify API without pass through the Shopify payments flow. I have an application outside to the shopify app to need to access and update those credit card data.