Splice CAD

Splice CAD is a browser-based CAD tool for designing cable assemblies and wire harnesses. You can model wiring topologies, generate bills of materials, create manufacturing documentation, and export to industry formats — all from the browser. Recent updates focus on handling design complexity and automating work with agentic workflows. On the modeling side, it supports complex routing with branchpoints, mating relationships (for example a receptacle into a PCB header or a ferrule into a terminal block), decoupled BOMs so you can assign specific MPNs as the design evolves, and net visualization across conductors and terminations. Quality-of-life features include assigning components to multiple pages, device groups and subassemblies for reuse, and copy-paste from TSV or between browser tabs. A new MCP server opens the door to agentic workflows, letting AI tools assist with the design process. Splice CAD is aimed at electrical and hardware engineers who need a focused, connected tool for harness design and manufacturing output.

Electrical and hardware engineers use Splice CAD to design cable assemblies and wire harnesses, generate BOMs, and produce manufacturing docs.