A successful request will also produce XML. For example, a successful request to the credits resource would produce something like this:

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE response PUBLIC
"-//textmarketer.co.uk//DTD Web Services REST 1.6//EN"
"http://api.textmarketer.co.uk/services/rest/DTD/credits_get.dtd">
<response processed_date="2011-04-13T15:56:32+01:00">
<credits>442</credits>
</response>

The exact response will vary for each resource and is detailed further below.