Available requests - webapix/mygls-sdk GitHub Wiki

Request class	Description
\Webapix\GLS\Requests\DeleteLabels	Set DELETED state for already printed labels/parcels with specific database record ID.
\Webapix\GLS\Requests\GetParcelStatuses	Get parcel statuses.
\Webapix\GLS\Requests\GetParcelList	Get parcel(s) information by date ranges.
\Webapix\GLS\Requests\GetPrintData	Validates parcel data for labels, adds valid parcel data to database, generates parcel numbers and returns data for custom generating labels.
\Webapix\GLS\Requests\GetPrintedLabels	Generates parcel numbers and PDF document contains labels in byte array format.
\Webapix\GLS\Requests\ModifyCod	Changes COD amount for specific parcel.
\Webapix\GLS\Requests\PrepareLabels	Validates parcel data for labels and adds valid parcel data to database.
\Webapix\GLS\Requests\PrintLabels	Calls both PrepareLabels and GetPrintedLabels in one step. So, it validates parcel data for labels, adds valid parcel data to database, generates parcel numbers and PDF document containing labels in byte array format.

For more information please check the Official MyGLS Docs and the examples.