Hi Ocastx,
I believe you could query the CheckoutBranding object which would return data if a merchant is using the branding API/ checkout extensibility.
Topic summary
Topic: Detecting whether a shop uses legacy checkout.liquid customizations vs Checkout Extensibility via the Shopify Admin API.
- Context: Some features (Shopify Functions) don’t work with checkout.liquid. Developers need a reliable API signal to decide if functions can be applied.
- Attempted approach: Querying the CheckoutBranding object (Admin GraphQL) to infer use of Checkout Extensibility/branding API. This can return data, but it’s not a dependable indicator of full upgrade status.
- Current gap: No clear feature flag or ShopFeatures field exists to definitively identify a shop’s checkout type.
Key terms:
- checkout.liquid: Legacy theme-based checkout customization.
- Checkout Extensibility: New extensible, API-driven checkout customization framework.
- Admin API (GraphQL): Shopify’s administrative API for querying shop capabilities.
Outcome and status:
- Action: A feature request will be logged to add a flag that identifies checkout type.
- Resolution: Not resolved; no reliable API signal available yet. Developers must use imperfect checks (e.g., CheckoutBranding) until a new flag is introduced.
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