USB | Modem | HiLink | management and monitoring

I use HiLink modem (Huawei E3372). It looks like an ethernet interface inside OpenWRT and it's possible to get access to it via IP. The standard way to configure it and get statistic from it are web interface. It's good for a human but not for a programme. Is there any soft for OpenWRT (CLI-based) to communicate with modem via some kind of API?