Whilst we do not currently support a direct integration with ServantKeeper, you can easily export our Payments by Item report, reformat the columns to match ServantKeeper's import format and upload it into ServantKeeper.
To find the Payments by Item report in Givecloud:
Log in to the Admin section.
Click into Contributions > Payments by Line Item on the left-hand menu
Apply any necessary filters.
Click the 'Export' button in the top right corner.