Login into shopify coustomer

Topic summary

Implementing Google SSO for customer login on a custom React Shopify storefront. The author wants users to authenticate with Google Single Sign-On (SSO) and then obtain a Shopify customer access token.

Constraints and preferences:

  • Avoids third‑party apps.
  • Willing to use a Node.js backend if necessary.
  • Seeks a method via the Storefront GraphQL API to exchange SSO auth for a customer access token.

Key terms:

  • SSO: Single Sign-On, letting users log in with Google credentials.
  • Storefront GraphQL API: Shopify API used to create and use customer access tokens for authenticated storefront requests.

Status: Open; the author is requesting the best approach and specific guidance to achieve this without third‑party apps.

Summarized with AI on December 28. AI used: gpt-5.

I am using a custom front end for my Shopify store made in React there I have created an option for the user to log in using Google SSO and get the access token.
I have not found the best approach to do this. I don’t want to use third-party apps instead I can use node js if required but still I need a storefront graphql API to get the access token for the user