Coupang Marketplace Connector for Shopify

Key Features

Bulk product and variant listing from Shopify to Coupang via the Admin GraphQL API, with batched submission and per-item error reporting

Two-way inventory sync across Shopify multi-location stock and Coupang available quantity, guarded against overselling

Scheduled price sync from Shopify to Coupang with configurable KRW conversion, margin and rounding rules

Korean category, attribute and product-notice (고시정보) mapping so listings pass Coupang validation

Order import from Coupang into native Shopify orders, with marketplace fees and buyer-masked shipping stored in order metafields

Fulfillment and tracking write-back: tracking numbers entered in Shopify are pushed to Coupang to update shipment status

Rocket (로켓배송) fulfillment status read-back so Coupang-fulfilled SKUs are flagged inside Shopify

Webhook-driven updates (orders/create, inventory_levels/update, products/update) for near-real-time sync between systems

Field-level mapping UI so your team controls how Shopify metafields, options and tags translate to Coupang fields

SKU and barcode matching to link existing Coupang listings to Shopify products without creating duplicates

Sync logs and a retry queue with clear failure reasons for rejected listings or stock pushes

Secure OAuth-based connection to Coupang Wing Open API with credentials stored server-side, never in the theme

Built to order, done for you

No DIY setup — a working app, built, installed and supported by ECOSIRE.

You order

Start with a one-time build price. We scope it with you at kickoff.

We build & install

ECOSIRE builds, configures and installs it on your Shopify.

Go live + support

You go live in about 2–4 weeks, with a post-launch support window.

About this Product

The Coupang Marketplace Connector for Shopify bridges your Shopify catalog and South Korea's largest marketplace, Coupang, so you can list, sell and fulfill across both channels without re-keying data. This is a build-to-order app: after purchase, ECOSIRE configures it against your store and your Coupang Wing seller account, installs it as a custom app on your Shopify, and hands it over working — there is no instant App Store download.

Under the hood, the connector reads your catalog through the Shopify Admin GraphQL API, maps each product and variant to the correct Coupang category, attribute and notice (고시정보) fields, and pushes listings in bulk. Inventory and price sync runs both ways: Shopify multi-location inventory levels and price changes propagate to Coupang on a schedule, and Coupang sales decrement Shopify stock so you avoid overselling. Orders placed on Coupang are imported as native Shopify orders with line items, buyer-masked shipping data and marketplace fees recorded in order metafields; tracking numbers you add in Shopify flow back to Coupang to keep your shipment status compliant.

We handle the Korea-specific reality others skip: KRW price handling with your margin and rounding rules, Korean category/attribute mapping, and read-back of Rocket (로켓배송) fulfillment status so Coupang-fulfilled SKUs are clearly flagged in Shopify.

Because it is built for your shop, the connector matches your SKU scheme, locations and tax setup rather than forcing a generic template. ECOSIRE owns the build, the install and ongoing support — including adapting to Coupang Wing API changes. Typical delivery is 2–3 weeks from kickoff.

What you get

A custom Shopify app installed on your store and connected to your Coupang Wing seller account

Configured catalog, category, attribute and KRW pricing mappings tailored to your products

Initial bulk listing of an agreed product set to Coupang, validated and live

Working two-way inventory, price and order sync with webhook automation enabled

Admin mapping and sync-log interface for your team to monitor and adjust

Handover documentation plus a walkthrough session covering operation and troubleshooting

An agreed post-launch support window for fixes and Coupang API change adaptation

Who this is for

Cross-border seller entering Korea

A Shopify merchant already selling internationally who wants a foothold on Coupang without managing two catalogs by hand. They need reliable inventory and order sync and help navigating Korean category and KRW requirements.

Korean DTC brand scaling channels

A Korea-based brand running Shopify as its primary store that wants Coupang as an additional sales channel. They care about accurate stock across locations, correct Korean attribute/notice fields, and Rocket fulfillment visibility.

Ops or e-commerce manager

The person responsible for day-to-day order processing who wants Coupang orders to appear as normal Shopify orders, tracking to sync automatically, and clear logs when something fails — without engineering a connector themselves.

How Coupang Marketplace Connector for Shopify Compares

Criterion	ECOSIRE	Custom Build	Competitor
Built specifically for your store, SKU scheme and tax setup	Included	Included	Not included
Coupang marketplace connection (Wing Open API)	Included	Partial support	Partial support
Korean category, attribute & 고시정보 mapping handled for you	Included	Partial support	Partial support
Two-way inventory & order sync with overselling protection	Included	Partial support	Included
KRW pricing with margin/rounding rules	Included	Partial support	Partial support
Rocket (로켓배송) fulfillment status read-back	Included	Partial support	Not included
Instant self-service install from the App Store	Not included	Not included	Included
Direct vendor ownership of fixes & API-change updates	Included	Partial support	Not included

Frequently Asked Questions about Coupang Marketplace Connector for Shopify

How long until the connector is live on my store?

Typical delivery is 2–3 weeks from kickoff, depending on catalog size and how many Coupang categories your products span. After purchase we confirm scope, connect to your Coupang Wing account and Shopify store, build and configure the mappings, run an initial bulk listing, then validate sync end to end before handover. Larger or more complex catalogs may take longer; we give you a firm timeline at kickoff.

Is this an instant Shopify App Store download?

No. This is a build-to-order custom app. ECOSIRE builds it for your specific store, Coupang account, SKU scheme and tax setup, then installs it as a custom app on your Shopify and hands it over working. There is no public App Store listing to self-install, and we never ask you to paste Coupang API keys into your theme — credentials are stored server-side.

What do you need from me to connect Coupang?

An active Coupang Wing seller account with Open API access enabled, and a Shopify plan that permits custom app installation. We use your Coupang Wing API credentials to authenticate server-side and the Shopify Admin GraphQL API via a custom app with the scopes needed for products, inventory, orders and fulfillment. We'll guide you through generating and sharing these securely at kickoff.

How are Korean categories, attributes and KRW prices handled?

During the build we map your Shopify products to the correct Coupang category, required attributes and product-notice (고시정보) fields so listings pass Coupang validation. Pricing uses a configurable KRW conversion with your margin and rounding rules, so Coupang prices stay aligned with your strategy. You control the mappings through an admin interface after handover.

What ongoing support and updates are included?

Every build includes an agreed post-launch support window for bug fixes and configuration adjustments. Coupang's Wing Open API and category requirements change over time, so we offer ongoing maintenance to keep the connector compliant and adapt mappings as needed. Because ECOSIRE owns the code, fixes and enhancements come directly from us rather than a third-party app vendor's release queue.