User Manual
Chapter 1:  Using the REST API  19
Obtain Keywords with GetPopularKeywords
  Version 3.7
by using an URL instead of XML and adding the necessary REST parameters (see “Basic REST Input 
Parameters” on page 3):
https://ebay.custhelp.com/cgi-bin/ebay.cfg/php/enduser/std_adp.php?p_faqid=597
For a category, GetCategories returns the category name, its unique ID (within the site you specify), 
and meta-data that helps you determine where the category fits in the category hierarchy. 
Parameters for GetCategories are the same in the REST API as in the unified schema, except for the 
basic REST input parameters. For the REST-specific input parameters, see “Basic REST Input 
Parameters” on page 3. For more information about using GetCategories, including descriptions of 
the call-specific input and output parameters, see the following document:
GetCategories
General information about the unified schema format is available at the following location:
http://developer.ebay.com/support/docs/
Obtain Keywords with GetPopularKeywords
Using GetPopularKeywords, you can obtain a list of keywords that users have frequently specified 
when searching eBay. The list is regularly updated. 
Optionally, you can specify a category ID for keywords relating to a specific category. Please note 
that you cannot specify the 
CategoryID parameter more than once per call.
To use the 
CategoryID parameter to obtain frequently-used keywords, you could specify an URL 
similar to the following:
http://rest.api.ebay.com/
restapi?CallName=GetPopularKeywords&RequestToken=UserToken&RequestUserId=UserName&Category
ID=20081&Version=491
The following sample shows how to obtain frequently-used keywords for a category and its 
subcategories:
http://rest.api.ebay.com/
restapi?CallName=GetPopularKeywords&RequestToken=UserToken&RequestUserId=UserName&Category
ID=58058&IncludeChildCategories=true&Version=491
Parameters for GetPopularKeywords are the same in the REST API as in the unified schema, except 
for the basic REST input parameters. For the REST-specific input parameters, see “Basic REST Input 
Parameters” on page 3. For more information about using GetPopularKeywords, including 
descriptions of the call-specific input and output parameters, see the following document:
GetPopularKeywords
General information about the unified schema format is available at the following location:
http://developer.ebay.com/support/docs/










