Add a marketplace to your Magento store
Open your eCommerce to third-party vendors, while Magento stays your core commerce engine. No migration, no replatforming, no vendor lock-in.
See the Magento 2 Connector in action
Why keep marketplace logic out of your Magento core?
| Marketplace logic inside Magento | Marketplace on Mercur, beside Magento |
|---|---|
| Tangled into your commerce core | Isolated, with its own extension points |
| Every Magento upgrade gets heavier | Magento upgrades stay clean |
| Vendors and commerce fight for one roadmap | Vendors scale without touching commerce |
How Magento and Mercur work together
Magento stays your commerce core. Mercur runs the third-party marketplace beside it, and the two talk over APIs and events. Your store and your marketplace scale on their own.
What changes in your store once you add a marketplace?
With Mercur, product pages show competing offers, one checkout covers every vendor, and one customer order becomes a separate order, payment, and payout per vendor.
Onboard a vendor
A configurable application, KYC and KYB through your payment provider, and a hard rule: no verification, no payout.
List the catalog
Bulk import by file or API with a mapping wizard. Listings dedupe by EAN, so three versions of one phone become one product with competing offers.
Win the sale
Offers compete on price and availability. The BuyBox picks the winner and shows every vendor standing behind it.
Take a mixed cart
One order through your Magento checkout, across your own products and third-party offers, with shipping costed per vendor.
Split the order
That single Magento order breaks into a separate order and payment per vendor, on its own.
Fulfill and track
Logistics classes, lead times, lockers, and multi-shipment – with a status flow where only the admin marks an order received.
Settle and pay out
An append-only ledger, real Pending, Payable, and Paid balances with a Reserved bucket for holds, statements, and invoices. The balance a vendor sees is the money they get.
Handle returns and disputes
Per-line returns on your policy window, refunds that match the books, and disputes that hold a payout until they close.
Discover how to add a Magento marketplace to your store
Tell us about your eCommerce and what you want to sell third-party. Our experts will show you how it connects to your stack, how long it takes, and what it costs.
How Mercur compares with SaaS marketplace platforms
| SaaS Marketplace | Mercur | |
|---|---|---|
| Core technology | Closed, vendor-only | Open source (MIT), public |
| Enterprise code | Black box | Full source for licensees |
| Integrations | Separate products | Built into one platform |
| Customization | Tickets and workarounds | Your own layer, official extension points |
| Deployment | Vendor cloud only | Any cloud or on-premise |
| Cost model | A percentage of your GMV | Zero GMV fees |
| Exit | Lock-in | You keep what you paid for |
| Developer pool | Certified specialists | Any web developer |
How the connector communicates with Magento
Mercur connects to Magento through a working two-part connector – a module on Magento, an integration on Mercur. Mercur becomes the source of truth for third-party vendors; Magento stays the storefront and checkout your customers already use.
Built for production
The Magento connector is open source, MIT-licensed, and public on GitHub. Your exact setup – Magento version, PIM, ERP – is configured per deployment.
Retries with backoff and a retry job for orders that failed to sync.
Idempotency keys, so a retried order is never charged twice.
Signed webhooks and a scheduled delta sync keep both sides current.
What the integration process looks like
The team that builds Mercur can take you through all four steps.
Marketplaces built on Mercur
Montelink
B2B2C online consultation marketplace for independent advisors and business experts, with a per-minute billing engine and custom expert panel.
Material Index
Material Index lets contractors, architects and developers buy and sell reclaimed materials, live in the UK and licensed in Australia, the USA, and Spain.
Suplement.io
Suplement.io equips supplement brands with EU-based manufacturing – ready-to-brand products, private-label formulation and compliance – in 20+ EU countries.
FAQ on adding a marketplace to Magento
See how leading brands build their marketplace
Talk to the team behind Mercur – how it works, how other brands build with it, and where it fits for you.