Buy anything online without building a single retailer integration

Through your Zinc Wallet — a prefunded balance you top up at app.zinc.com. Each order draws the item cost, tax, shipping and the $1 fee from that balance, so there is no payment object on the request. An order that would take you below zero is rejected as insufficient_funds rather than partially placed.

Yes. Tracking numbers are automatically extracted from retailer shipping notifications and added to your order once items ship. Each tracking record includes the carrier name (UPS, FedEx, USPS, Amazon Logistics, DHL) and tracking number.

An order may have multiple tracking numbers if items ship separately. Note that tracking may not be available immediately after an order is placed — we recommend periodic polling. See our tracking docs for full details.

There’s no hard limit. We support high-throughput ordering and batched order creation. Rate limits are high and tunable based on your volume. Create as many orders as you want — large volumes will be queued and completed in the order they are submitted.

Ask the API rather than a page that goes stale: GET https://api.zinc.com/retailers returns the current list, free and with no key. It grows regularly, and with your own retailer accounts you are not limited to it at all.

Yes — test mode is a full sandbox with isolated data, its own webhook config, and rehearsal products for every failure mode, so you can exercise out-of-stock, price-exceeded and shipping-unavailable before any of them happen for real. Returns route through it too. An agent can mint its own zn_test_ key at POST /sandbox/keys with no account at all.

From the carriers directly. We poll them ourselves rather than only reading what gets reported to us, which is what gives you real checkpoints and a full delivery history instead of a status that jumps straight from shipped to delivered. We can also retrieve tracking that is only visible behind a login, which is otherwise where numbers go missing. None of it needs polling on your side: order.tracking_received and order.delivered fire as they happen.

While it is still in our queue, yes — cancel it and your wallet is refunded. Once it has been placed with the retailer, we do not drive a cancellation on their site for you, so the practical path is a return once it arrives. If the retailer cancels it themselves, order.cancelled fires with the reason and your wallet is refunded automatically.

The amount you enter is what lands in your wallet; the processing fee for the method is added on top of what you are charged. Card is 2.9% + $0.30, ACH is 0.8% capped at $5.00, and a wire is a flat $15.00. Self-serve top-ups run from $15.00 to $100,000.00, and you can wire any amount you like — the details and your memo code are in Settings. Test and production wallets are kept separate.

On your own retailer accounts, yes — ask us and we will get you set up. On ours, no: the accounts we buy from are US accounts, so orders placed on Zinc's own accounts ship within the US, Germany and Italy.