API Command:

https://boompei.com/api/balance.php?username=****&apiKey=****
//Replace **** with your username, api key...

E.g.
https://Boompei.com/api/balance.php?username=Peter&apiKey=sag8rqpfa8vkpn1ler56ygh8kxxw1aor8
//where username is Peter and apiKey is sag8rqpfa8vkpn1ler56ygh8kxxw1aor8

Response:

JSON Format:
{"status":"successful","balance":"2500"}

Else, if there is an error in your request, one of the responses below will be displayed in this format:
{"error":"ERR201","description":"Invalid Username or Api Key"}