API authentication / Key – Open API

Can I use the API key in two or more Integrator's solutions?

It's possible to use. It can be used after registering the API key in 2 or more Integrator's solutions. See more

When issuing an OpenAPI Key, the issue button is disabled and the API Key cannot be issued.

First, please check whether you have agreed to the terms or whether you have already issued an API key. See more

Where can I find VendorId (Vendor's ID)?

After signing in WING, you may click the vendor name at the right top, to find the VendorID starting from the letter of A or C. ex) A000001234 See more

Is there any non-Java language sample?

JAVA, Node.js, PHP, C#, Python, and Classic ASP are supported as integration samples. We'd like to seek your understanding that no other languages are not provided as of now. <Integration Sample> ... See more

Invalid signature error is returned. (HMAC error)

This is an HMAC generation error. Please check your vendorID, accesskey, and secretkey, as well as if the timezone is accurate and if the server path is changed into a valid one. [HMAC generation ... See more

Is There a Guide on Generating HMAC?

Please refer to the HMAC generation example found in the link below.If you use Java, please download "Java HMAC Generator SDK" for a more convenient development experience.(Also available for downl... See more

"Specified signature is expired" 401 Error Return

401 errors are authentication errors and "Specified signature is expired" is an error that occurs when the generated HMAC Signature has expired. Since HMAC signatures last max 5 minutes from creati... See more

Where can I issue / check API Key(AccessKey, SecretKey)?

<How to issue an API Key >Please refer to the link below for instruction. [Guide for issuing API Key] ※ Process Wing Log-in> Click seller name in the upper right corner > Click change seller inf... See more

Where can I re-issue / delete API Key(AccessKey, SecretKey)?

API Key(Access Key, Secret Key) cannot be re-issued or deleted. Please refrain from disclosing the key to external parties. Please use the key issued when conducting API integration. ※ How to fin... See more

Do I have to pay for Coupang open API service?

No, it's for free. Any Coupang seller can make use of Coupang open API. [OPENAPI integration guide link] See more

Is there any limitation on the number of query created per day?

No, there is no limitation on the number of query created per day. However, maximum 5,000 products (at a vendoritem level) can be registered per day. Also, the service may be limited or not availab... See more

OPENAPI 변경사항 안내