Check the existence of a user account


New endpoint available: CheckLogin


This API allows you to check if a user account already exists in the TraceParts database. This check could help you to reduce the number of calls to the UserRegistration API.


This web service requires an API Key. Please use the form to request your API Key.


The API returns the existence of the user email in the TraceParts database.

Building a URL

The CheckLogin API request takes the following form:


Certain parameters are required while others are optional. As it is standard in URLs, all parameters are separated using the ampersand (&) character. The list of parameters and their possible values are enumerated below.

Required parameters

Parameter NameData typeDefault valueDescription
ApiKeystringnoneCode calling an API to track and control how the API is used
FormatstringnoneAnswer file type (xml, json)
UserEmailstringnoneUser email / User ID

Optional parameters

Parameter NameData typeDefault value

Example of CheckLogin API

The request below returns the existence of a user account with the email as an xml file.[email protected]&Format=xml&ApiKey={ApiKey}

By changing the Format and adding the ActiveJsonLight, CheckLogin returns the existence as a light Json file.[email protected]&Format=json&ActiveJsonLight=1&ApiKey={ApiKey}

CheckLogin responses

CheckLogin responses are returned in the format indicated by the Format parameter within the URL request’s path.

JSON Output

A sample HTTP request is shown below, displaying if the user account exists.


XML Output

Same example as above.


CheckLogin response elements

CheckLogin responses contain one element:

  • “Registered”: the value is “true” or “false” if the user account already exists in the TraceParts database or not.

Developer support

Please contact us for any problems, questions or comments related to this web service.

Last updated January 28, 2016