| Common Fields | |||
| Field | Type | Summary | Req. |
| GetCategoryTrends.CategoryQuery | This node contains all the input for this call. | no | |
| ...CategoryQuery.Categories | The categories to return results for. | no | |
| ...Categories.CategoryID | integer | A category to return results for. | yes |
| Call Specific Fields | |||
| Field | Type | Summary | Req. |
| ...CategoryQuery.TrendValues | Allows you to specify which values to return | no | |
| ...TrendValues.ReturnAll | boolean | Returns all the values specified above. | no |
| ...TrendValues.ReturnLowestEndPrice | boolean | Return the lowest End Price for the category | no |
| ...TrendValues.ReturnHighestEndPrice | boolean | Return the highest End Price for the category | no |
| ...TrendValues.ReturnAverageSellers | boolean | Return the average number of Sellers for the category | no |
| ...TrendValues.ReturnItemsOffered | boolean | Return the number of Items Offered for the category | no |
| ...TrendValues.ReturnItemsSold | boolean | Return the number of Items Sold for the category | no |
| ...TrendValues.ReturnBids | boolean | Return the Total Bids for the category | no |
| ...TrendValues.ReturnSuccessful | boolean | Return the Successful Listings for the category | no |
| ...TrendValues.ReturnListings | boolean | Return the Total Listings for the category | no |
| ...TrendValues.ReturnRevenue | boolean | Return the Revenue for the category | no |
| ...CategoryQuery.Scaling | string | Determines how the data is scaled | no |
| ...CategoryQuery.Breakdown | date range | The period to group days in. | no |
| ...CategoryQuery.Dates | Contains the date range for your search. | no | |
| ...Dates.DateRange | date range | Used to specific the number of days to search. | no |
| ...Dates.EndDate | date | The last date in the range of dates that you are searching. | no |
| ...Dates.StartDate | date | The first date in the range of dates that you are searching. | no |
| GetCategoryTrends.RequesterCredentials | Contains the authorization keys required for every call. | yes | |
| ...RequesterCredentials.DeveloperName | string | One of three required authorization keys that must be included with every call. | yes |
| ...RequesterCredentials.UserToken | string | One of three required authorization keys that must be included with every call. | yes |
| ...RequesterCredentials.Token | string | One of three required authorization keys that must be included with every call. | yes |
| GetCategoryTrends.Version | integer | The API Schema Version you wish to send and recieve results in. | no |