Amazon API Data Access Disclosure

Last updated: October 30, 2025.

CustomSync uses the Amazon Selling Partner API (SP-API) under the Direct-to-Consumer Shipping (Restricted) role to enable merchants to efficiently manage custom and personalized orders.

How CustomSync Uses Amazon Data

CustomSync securely connects to a seller’s Amazon account to perform the following functions:

1. Order Retrieval:

Retrieves order data, including item details, customization text, and buyer-uploaded images for Amazon Custom and Handmade orders.

2. Fulfillment Synchronization:

Syncs these customization details and shipping information directly into connected fulfillment platforms such as ShipStation or Veeqo, allowing sellers to print accurate packing slips.

3. Data Minimization & Retention:

Personally Identifiable Information (PII) is accessed only as needed to complete the above functions. No PII is stored long-term; all temporary data is securely deleted within 30 days of order date.

Security & Compliance

All API communication is encrypted.
Data at rest (when temporarily cached) is encrypted using AES-256 encryption.
Access is limited to authenticated and authorized accounts.
PII is never included in logs or shared with any third parties beyond seller-authorized systems.
Sellers may revoke access at any time through their Amazon Developer Permissions page.
CustomSync complies with Amazon’s Data Protection Policy, Acceptable Use Policy, and Selling Partner API Developer Agreement.