KiKit is a Python CLI tool, library, and KiCAD plugin for automating PCB panelization and fabrication output. It takes KiCAD board files (S-expression format) and produces panelized PCBs with v-cuts, mouse bites, tooling holes, fiducials, and frames. It also exports manufacturing files (Gerbers, drill, assembly data) tailored to popular fab houses (JLCPCB, PCBWay, OSH Park), generates 3D-printable solder paste stencils, performs DRC checks, and creates presentation pages for boards. The architecture is modular: core geometric operations use Shapely, interval algebra, and a custom S-expression parser; an extensible plugin system allows custom layout, tab, and cut strategies. The tool integrates deeply with KiCAD’s pcbnew API and supports multiple KiCAD versions (6–9) through version-specific adapters. While primarily a production tool for hardware engineers, its clean separation of parsing, geometry, and CLI makes several components reusable in other PCB-adjacent projects.