Print-on-demand API integration.

Plan a UK print-on-demand API integration. Discuss product JSON feeds, order workflows, artwork, status updates and onboarding with Promo Harbour.

A useful integration needs more than a list of products. Your store must identify the selected item, its available options, the quantity and the artwork that belongs to it. Order and customer references also need to remain consistent so both teams can trace the same request.

We work with businesses planning print-on-demand and custom merchandise workflows. Tell us whether you need catalogue data only, an ordering connection or a bespoke process. Confirm the supported operations, documentation and access before building against an assumed endpoint.

Map product identifiers, images, sizes, colours and other supplied fields into your own catalogue.

Agree the supported order data, selected options, quantities, references and delivery information.

Plan file handling, approval requirements and the available method for receiving order updates.

Send a short outline of your platform and the connection you need. We can confirm the next steps, available documentation and any project-specific requirements.

A catalogue feed helps another website display products without manually rebuilding every listing. Keep the product identifier as your mapping key and import the supplied option values accurately. Size and colour labels belong to the specific product; do not copy one garment's options to another.

Agree the feed URL, field definitions and refresh approach before implementation. Handle missing fields and unavailable products explicitly. Check what prices include and how quantity tiers work before presenting a selling price or promising availability.

Reading product JSON does not itself place an order. An ordering workflow needs its own agreed access, supported operations and validation. Your integration should map the customer's selected specification to the production requirement, not just pass a product name.

Confirm how artwork is supplied, when approval is required, which delivery details are needed and how failures are reported. Discuss white-label or multiple-address requirements separately rather than assuming they are included in every order.

Describe the platform, products, expected volumes and required data flow. Confirm what is supported before development starts.

Confirm identifiers, option values, required fields and authentication. Keep credentials out of public frontend code and repositories.

Agree how to test without creating unintended production orders. Check successful requests, invalid data, retries and artwork handling.

Agree live access, monitoring and support contacts. Check the first orders and keep your catalogue refresh and error handling working.

Test product mapping, valid sizes and colours, quantity tiers and unavailable options. Confirm currency, tax and delivery treatment so the storefront and final order price do not diverge.

Agree how to identify duplicate submissions, handle failed requests and trace an order reference. Confirm any limits and update mechanisms in the current documentation, along with the contact for resolving integration issues.

Tell us what your site needs to display and how you want orders to reach production. We will discuss access and the right next step.

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