Coupang Marketplace Connector

Key Features

Creates and updates Coupang listings directly from your Shopify products, variants and images via the Coupang OPEN API

Near-real-time inventory sync driven by Shopify inventory_levels/update webhooks, respecting your chosen multi-location warehouses

Price sync with a configurable source-of-truth direction (Shopify-led, Coupang-led, or per-field) including KRW currency handling

Order ingestion: Coupang orders are pulled in and created as Shopify orders so fulfillment runs in one place

Fulfillment and tracking sync back to Coupang when you fulfill in Shopify, updating shipment status

Category code and attribute/notice-field mapping using Shopify product metafields, including required Korean-language notice values

Rocket-eligible field handling so Rocket-Growth / fulfillment flags and lead-time fields are populated correctly per listing

SKU matching by barcode or vendor SKU, with safeguards against duplicate or orphaned Coupang listings

Reconciliation reporting that flags out-of-sync SKUs, Coupang-rejected listings and failed sync jobs with error reasons

Configurable sync filters by collection, tag or location so you publish only the catalog you intend to sell on Coupang

Retry-and-backoff queue with logging for Coupang API rate limits and transient failures

Admin-only OAuth connection to Shopify and secure storage of Coupang Wing OPEN API credentials

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 bridges your Shopify store and Coupang, South Korea's largest e-commerce marketplace, so you can sell into Korea without manually re-keying catalog, stock or orders.

This is a build-to-order app, not an instant App Store install. After purchase, ECOSIRE configures the connector against your Coupang Wing OPEN API credentials and your Shopify store, maps your data model, and installs it on your shop. You receive a working, tested integration — not a generic plugin you have to wire up alone.

Under the hood it uses the Shopify Admin GraphQL API plus webhooks (products/update, inventory_levels/update, orders/create) to detect changes in near real time, and writes them to Coupang through the Coupang OPEN API. Product metafields drive Coupang-specific fields — category code, notice/attribute values, and Rocket-eligibility flags — that have no native Shopify equivalent. Multi-location inventory is respected, so the warehouse quantities you choose are the ones pushed to Coupang.

Typical scope includes: creating and updating Coupang listings from Shopify products; inventory and price sync with a configurable source-of-truth direction; order and fulfillment sync (Coupang orders pulled into Shopify, tracking pushed back); category and attribute mapping; Rocket-eligible field handling; and a reconciliation report that flags SKUs out of sync, rejected listings and failed syncs.

Because Coupang enforces Korean-language notice fields, strict category attributes and its own approval workflow, a custom build lets us map your catalog structure to those rules rather than forcing your data into a one-size-fits-all template. ECOSIRE handles the build, the install, and ongoing support and updates as Coupang's API evolves.

What you get

A fully configured Coupang Marketplace Connector installed on your Shopify store

Connection setup against your Coupang Wing OPEN API credentials (vendor ID, access/secret keys)

Category, attribute and Rocket-eligibility field mapping tailored to your catalog

Initial catalog publish run plus inventory/price baseline sync to Coupang

Webhook registration in your Shopify store for product, inventory and order events

Reconciliation report configured and a walkthrough of how to read sync errors

Admin handover document covering field mapping, sync direction and operational runbook

Post-launch support window with bug fixes and Coupang API compatibility updates

Who this is for

Korea-market expansion merchant

A Shopify brand entering South Korea that needs its existing catalog live on Coupang without re-keying products, prices and stock by hand across two systems.

Operations / fulfillment lead

The person responsible for keeping stock accurate and orders shipped on time. They need Coupang orders flowing into Shopify and tracking pushed back automatically, with a reconciliation report to catch drift.

Cross-border / agency operator

An agency or distributor managing Shopify stores selling into Korea who needs Coupang category, notice-field and Rocket-eligibility rules mapped correctly to avoid listing rejections and approval delays.

How Coupang Marketplace Connector Compares

Criterion	ECOSIRE	Custom Build	Competitor
Shopify products, prices and inventory sync to Coupang	Included	Included	Partial support
Coupang order and fulfillment/tracking sync back to Shopify	Included	Included	Partial support
Coupang category, attribute and Korean notice-field mapping	Included	Partial support	Partial support
Rocket-eligible field handling	Included	Partial support	Not included
Reconciliation reporting for out-of-sync SKUs and rejected listings	Included	Partial support	Partial support
Built, installed and supported for you (no self-wiring)	Included	Not included	Not included
Instant self-serve install from the Shopify App Store	Not included	Not included	Included
Tailored to your exact catalog structure and sync rules	Included	Included	Not included

Frequently Asked Questions about Coupang Marketplace Connector

How long until the connector is live on my store?

This is a build-to-order app, so it is configured and installed for you rather than downloaded instantly. Typical delivery is about 10 to 15 business days from when we receive your Shopify access and active Coupang Wing OPEN API credentials. Larger catalogs or complex category mappings can extend that, and we confirm a firm timeline with you before work starts.

What do you need from me to get started?

We need collaborator/admin access to your Shopify store and your Coupang Wing OPEN API credentials (vendor ID plus access and secret keys), which require an approved Coupang seller account. We also need a sample of how your catalog maps to Coupang categories so we can build the attribute and notice-field mapping correctly.

Do you handle Coupang's required category attributes and Korean notice fields?

Yes. Coupang enforces strict per-category attributes and Korean-language notice (상품 정보 고시) fields. We map these from your Shopify product metafields during the build so listings pass Coupang's approval workflow. If certain values do not exist in your data yet, we define metafields for them so your team can maintain them going forward.

Can the connector handle Rocket-eligible listings?

It handles the Rocket-related fields exposed by the Coupang OPEN API — lead-time, fulfillment type and eligibility flags — and populates them per listing based on your mapping. Whether a given product qualifies for a Rocket program is determined by Coupang, not the app; the connector ensures the fields are submitted correctly so eligible products are not blocked by data errors.

What support and updates are included after launch?

Every build includes a post-launch support window covering bug fixes and updates to keep the connector compatible as Coupang's OPEN API changes. After that window, ongoing support and enhancements are available under a maintenance arrangement. Because ECOSIRE builds and hosts the integration logic, fixes and API updates come from us directly — you are not left maintaining undocumented code.

Is sync real-time, and which system wins on conflicts?

Inventory and order changes are near real-time via Shopify webhooks, with a scheduled reconciliation pass as a safety net. You choose the source-of-truth direction during setup — typically Shopify-led for stock and price — so conflicts resolve predictably. The reconciliation report surfaces any SKU where Shopify and Coupang have drifted apart, with the reason and last sync time.