LS Hair Card Tool is an add-on and geometry node system for generating real-time hair card models non-destructively. It allows creators to build hair structures using curves or meshes, offering dedicated viewport brushes—including Move, Property, and Smooth—for shaping and adjusting splines directly. The toolset features automated root alignment, customizable horizontal and vertical segment counts for density control, and parameters for taper, tilt, and randomization. It also includes utility node groups for creating braids, interpolating splines, and converting meshes to curves.