Please cite SAGA whenever you use it for your publications:

Clip selected grids to specified extent.

Name	Type	Identifier	Description	Constraints
Input
Grids	grid list, input	GRIDS
Shapes Extent	shapes, input	SHAPES
Polygons	shapes, input	POLYGONS
Output
Clipped Grids	grid list, output	CLIPPED
Options
Extent	choice	EXTENT		Available Choices: [0] user defined [1] grid system [2] shapes extent [3] polygon Default: 0
Interior	boolean	INTERIOR	Clip those cells that are covered by the polygons instead of those that are not.	Default: 0
Crop	boolean	CROP		Default: 1
Left	floating point number	XMIN		Default: 0
Right	floating point number	XMAX		Default: 0
Bottom	floating point number	YMIN		Default: 0
Top	floating point number	YMAX		Default: 0
Columns	integer number	NX		Minimum: 1 Default: 1
Rows	integer number	NY		Minimum: 1 Default: 1
Buffer	floating point number	BUFFER	add buffer (map units) to extent	Minimum: 0.000000 Default: 0