Printify Integration

Register this URL in your Printify dashboard under Settings → Webhooks to receive order status updates (created, sent to production, shipped, delivered):

Optionally add a PRINTIFY_WEBHOOK_SECRET secret to verify incoming webhook signatures.

Order Fulfillment API

Once Printify credentials are configured, forward Square merch orders to Printify for print-on-demand production by calling:

Include lineItems (with Printify product/variant IDs) and addressTo from the Square order. See the API handler for the full request schema.