eGauge Systems offers access to a free, unrestricted API for use in developing applications which fetch data from the eGauge meter. This API covers the same functions used by the default eGauge interface. The eGauge push service functionality is also covered in the API.
eGauge technical support can offer assistance interpreting XML data. Code review and similar support is not available.
EG4xxx meters support TLSv1.2, while EG30xx only supports TLSv1.0