● Marketplace integration Connect OnBuy in under 5 minutes and run the whole channel from Huup — products, stock, price, orders, dispatch, refunds — across every OnBuy country site.
OnBuy is one of the few major marketplaces that doesn't compete with its sellers. Combined with Huup, it's a low-friction way to add a new revenue channel.
OnBuy is one of the fastest-growing online marketplaces in the UK, with over 21 million products listed and active expansion into European country sites. A new sales channel that's still small enough for new sellers to gain traction.
OnBuy publishes its commission structure up front and does not compete with its own sellers — there is no OnBuy-branded retail layer pushing your listings down the page.
OnBuy's account management and seller-response teams are UK-based and reachable through the seller panel. When you connect Huup, you get both OnBuy's seller team and Huup's integration team side by side.
Huup covers the full OnBuy seller lifecycle — from publishing a product to issuing a refund — across every site on your OnBuy account.
Push products and listings to OnBuy with full variant support — single, 1-axis or 2-axis. Brand, category, EAN and technical details mapped in Huup; listings publish with your chosen delivery template, handling time and return policy.
Stock and price changes in Huup batch every minute to OnBuy through the listings endpoint, with quota-aware rate limiting and an hourly safety-net full sync.
New and modified OnBuy orders ingest every 5 minutes with line items, customer, addresses and payment summary. Fee breakdown (sales, boost, category, delivery) captured per order for finance reporting.
Mark dispatched in Huup; carrier code, tracking number and tracking URL push to OnBuy automatically through OnBuy's mapped carrier codes.
Carrier swap or a corrected tracking number after dispatch? Huup pushes the change to OnBuy with no manual seller action.
Push cancellations and full or partial item-level refunds to OnBuy with mapped reason codes (Customer Return, Damaged, Incorrect Item, etc.) — recorded as returns in Huup for finance reporting.
OnBuy delivery templates import into Huup as shipping policies, ready to pick from when you publish a listing. Re-syncable on demand.
UK, France, Germany, Spain, Italy, Netherlands, Austria, Belgium, Poland and every other OnBuy country site is selectable on the same connection.
Two API keys, one Verify Credentials click. Huup auto-discovers your seller ID, entity, sites and delivery templates — no manual ID copying.
Get your Consumer Key and Secret Key from the OnBuy Seller Control Panel, paste them into Huup, click Verify Credentials, then Save. Huup discovers your sites, seller ID and delivery templates automatically.
Read the setup guide →14-day trial. No card required. List on OnBuy plus every other channel you sell on, all from one workspace.