src/Ovh/Cloud/CloudClient.php
public function getProjectBalance($serviceName){
        if (!$serviceName)
            throw new BadMethodCallException('Missing parameter $serviceName (OVH Cloud Project).');
        try {
            $r = $this->get('cloud/project/'.$serviceName.'/balance')->send();
        }
        catch (\Exception $e) {
            throw new CloudException($e->getMessage(), $e->getCode(), $e);
        }
        return $r->getBody(true);
    }
public function getProjectBalance($serviceName){
        if (!$serviceName)
            throw new BadMethodCallException('Missing parameter $serviceName (OVH Cloud Project).');
        try {
            $r = $this->get('cloud/project/'.$serviceName.'/balance')->send();
        }
        catch (\Exception $e) {
            throw new CloudException($e->getMessage(), $e->getCode(), $e);
        }
        return $r->getBody(true);
    }
Get Project Balance
GET /cloud/project/{serviceName}/balance

@return
@throws \Ovh\Cloud\Exception\CloudException
@throws \Ovh\Common\Exception\BadMethodCallException