Headless checkout SSO is now documented with sso=silent
Shopify developer change
MerchantDiff detected this entry in Shopify's official developer changelog on June 08, 2026.
This Shopify update is categorized as API, New, Customer Account API, Hydrogen, Storefront API.
What changed
We’ve updated our headless checkout authentication docs to refer to the silent single sign-on query parameter as sso=silent instead of logged_in=true. This is a terminology and documentation update only. Existing checkout URLs that use logged_in=true will continue to work. Going forward, Shopify docs and examples will use sso=silent when describing the silent SSO flow from a headless storefront to checkout. Learn more about authenticating buyers in checkout.
Who is affected
Developers building customer account experiences or extensions should review this change.
What action may be needed
Review whether the new capability is relevant to your app. If you plan to use it, test the affected API or workflow before adopting it in production.
Use the official Shopify entry below as the source of truth for technical implementation details, affected APIs, migration instructions and deadlines.
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