Developer Center
/users/credit GET
Returns the current users credit information.
Required parameters
no parameters
Cost 
Free
Example response
{
"status": "ok",
"data": {
"api_key": "YOUR_API_KEY",
"balance": 99.99,
"api_credit": 999,
"serp_credit": 999
},
"request_time": 1356273420
}