![]() ![]() ![]() We hope that this breakdown of using Amazon’s Marketplace Web Service (MWS) was informative and useful. This site is useful for verifying that your user credentials (access key ID, secret key ID, etc.) are properly registered and working before trying to use your custom applications, as well as for troubleshooting other types of errors. Most reports are formatted as either tab-delimited text files or XML, both of which can be easily processed and imported into a database for detailed analysis.Īmazon also provides a useful resource for debugging MWS API calls (see MWS Scratchpad). Enter this GeneratedReportId into the API GetReport to initiate the download of your report file. If the report is ready to be downloaded, its status response will be “_DONE_”, and the response will contain a GeneratedReportId. This API will ask for your report ID (or ID’s – if you are requesting multiple reports) to check on the status. A call is made to the API GetReportRequestList. Once you have your ReportRequestID, the fetching of the requested report is a two-step process. Take note of this ID, as it will be used to check the status of the report and you will ultimately download it when it is ready. A successful call of RequestReport will generate a response that contains a ReportRequestId. The RequestReport call initiates a request for a specific ReportType (depending on the report, you may have the option to pull a subset of the data with filters like StartDate, EndDate, MarketPlaceID, and more). Many API’s are available for managing the reports, but the process of requesting a report and then retrieving it from the service can be simplified down to three particular API calls (see requesting a Report Flowchart): Once you access the MWS, a wide variety of report types are available by on-demand generation or scheduling (see list of available Report Types). The client library (thankfully) handles the building of properly formatted requests, so the tokens need only be passed to the various classes upon their instantiation or setup. Specifically, a seller will need an Access Key ID, a Secret Access Key, and their Amazon Merchant ID in order to communicate with the MWS. To use the Amazon Marketplace Web Service, sellers go through a registration process that generates certain “tokens” that are required for access. During a recent project, we found it cleaner to take the library (the C# version) and compile it into a DLL ( Dynamic Link Library) so it could be included in future projects.Īccessing the Amazon Marketplace Web Service The library is available in several different development languages, including C#, PHP, and Java, and is ready to be used as is. In this article, we’re going to walk through how to start using MWS and the basic functionality for accessing reporting.īefore we start, we want to mention that programmatically using this service is something that can be done quite easily, as Amazon provides an open source client library for interacting with their MWS. Amazon MWS provides robust functionality for generating a wide variety of reports that will help you make decisions (among other features like inventory and order management). Have you seen the client libraries? They do most of the work already, just plug in your keys.If you sell products via Amazon and are interested in using data to improve your business, then look no further than Amazon Marketplace Web Service (MWS). If you need more than a report, but need to work with the data in some other way, you can just write a routine in whatever language you're using to parse out the data in memory. Take that Id and call the GetReport operation and you'll get back the report once it's available. You first request the report using the RequestReport operation, then you'll get back a GeneratedReportId. You can call the Reports API just like the Products API, but there are extra steps involved. In order for you to retrieve all of your products without input parameters, you can use the Reports API to request an inventory report or active listings reports or any of the report types here: ![]()
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