These request headers are used by all URLs of the UserAuth and Quota web services.

The Accept header variable controls the format of the data returned from any URL: the format can be either XML or JSON. The default serialization of ASP.NET Web API is used, which means the following MIME type to formatter mappings are used:

Also, if the “X-Requested-With” header variable is present with a valid of “XMLHttpRequest”, this maps to application/json. This is also the default behavior of Web API.

For any request that includes a request body (that is, a PATCH request), the Content-Type header variable must be included to explicitly specify the format of the request body. The Content-Type header supports the same MIME types as Accept.