Amazon Services
Amazon Marketplace Web Service (Amazon MWS) Documentation
Amazon MWS Documentation

Registering to use Amazon MWS

Amazon Marketplace Web Service (Amazon MWS) is a secure environment that uses signatures for authentication and lets sellers delegate calling rights to developers by using the Amazon MWS authorization service. Before you can develop Amazon MWS applications for yourself or others you must register as a developer on the User Permissions page in Seller Central.

Amazon MWS-eligible seller accounts

To be eligible to use Amazon Marketplace Web Service (Amazon MWS), you must have at least one of the following Amazon accounts:

  • Non-individual Amazon seller
  • Amazon Payments
  • Amazon Fresh
  • Amazon Business
  • Amazon Prime Now

Registering as a developer

Before you can develop Amazon MWS applications for yourself or others you must register as a developer.

To register as a developer

  1. Go to the User Permissions page in Seller Central and log into your Amazon seller account as the primary user.
  2. In the Develop applications using Amazon MWS section, click the Register as a developer button.
  3. Fill out the Register as a developer form.

    Be sure to click the Verify button to verify email addresses that you enter.

  4. Click the Sign up button.

    Your Developer ID appears.

  5. Click Your developer credentials - Do no share these.

    Your AWS Access Key ID and Secret Key appear.

You can access your Developer ID and developer credentials at any time on the User Permissions page in Seller Central.

Using your Developer ID and developer credentials

The following is an example of the Developer ID and developer credentials that you receive when you register as a developer:
  • Developer ID (a 12-digit identifier): 1234-3214-4321
  • AWS Access Key ID (a 20-character, alphanumeric identifier): 022QF0EXAMPLEH9DHM02
  • Secret Key (a 40-character identifier): kWcrlEXAMPLEM/LtmEENI/aVmYvHNif5zB+d9+ct

If you are developing an Amazon MWS web application for sellers or are providing Amazon MWS-related development services to sellers, you must provide your Developer ID to those sellers so that they can authorize you to access their Amazon seller accounts using Amazon MWS.

Note: If you are developing an Amazon MWS desktop application, do not embed your credentials in the application. Instead, have the users of your application register as a developer to get their developer credentials. Users of your desktop application should use their own developer credentials when submitting requests to Amazon MWS. For more information, see I have developed a desktop application. How do sellers use it?.

The AWS Access Key ID is associated with your Amazon MWS registration. You include it in all Amazon MWS requests to identify yourself as the sender of the request. The AWS Access Key ID is not a secret. To provide proof that you truly are the sender of the request, you must also include a digital signature. For all requests except those generated using the Amazon MWS client libraries, you calculate the signature using your Secret Key. Amazon uses the AWS Access Key ID in the request to look up your Secret Key and then calculates a digital signature with the key. If the signature Amazon calculates matches the signature you sent, the request is considered authentic. Otherwise, the request fails authentication and is not processed.

Important: Your Secret Key is a secret that only you and Amazon should know. It is important to keep it confidential to protect your account. Never include your Secret Key in your requests to Amazon MWS, never embed it in a desktop application, and never e-mail it to anyone. Never share it with anyone, even if they claim to be from Amazon. No one from Amazon will ever ask you for your Secret Key.

Authorizing a developer

A seller must authorize a developer to make calls to Amazon MWS on the seller's behalf.

For a seller to authorize a developer

  1. The developer must be a registered Amazon MWS developer. See Registering as a developer.
  2. The developer gives their Developer ID to the seller.
  3. The seller goes to the User Permissions page in Seller Central and logs into their Amazon seller account as the primary user.
  4. The seller clicks the Authorize a developer button.
  5. In the Developer name text box, the seller enters the name of the developer that they are authorizing. This doesn't need to be the exact name; it is merely for the seller's reference in the future.
  6. In the Developer ID text box, the seller enters the Developer ID that the developer gave them in Step 2, and then clicks the Authorize developer button.

    The seller's MWS Auth Token appears.

  7. The seller gives their Seller ID and MWS Auth Token to the developer so the developer can make calls to Amazon MWS on the seller's behalf.