API Updates for February 6, 2025
Stencil
- Handlebars partial blocks for Stencil
Stencil now supports Handlebars partial blocks, enabling merchants to leverage the latest handlebar features and best practices for enhanced flexibility and performance.

Unified Billing
- Unified Billing OAuth Scopes
We’ve updated the OAuth scopes table to provide an accurate reflection of scope behavior.
Webhooks
- Webhook security update
We’ve enhanced webhook security with a new verification header that uses the Standard Webhooks protocol. This header replaces previous security methods, such as authentication headers. Each webhook event is signed with the client secret, and you can verify its authenticity using the provided libraries.
Platform Limits
- URL & concurrent limits
Added URL character limits to the POST and PUT Product images endpoints.
- Added concurrent limits to the POST and PUT Segments, and POST Shopper profiles to a segment endpoints.
Enhancements & Fixes
-
Added a
ttlobject to the shipping rates response body. -
Added enum values for the consents array in the POST and PUT endpoints for subscribers v3.
Developer Blog
Stay informed with the latest platform updates and improvements.